05 July 2016
NDI electrode position scanner 'Krios' is compatible with ActiveTwo.
All the BioSemi ActiveTwo EEG headcaps can very easily be made compatible with the new electrode positioning system called "Krios" from NDI. Customers can choose to put the reflective markers (8mm outer diameter, 4mm inner diameter) on the headcap holders or on the PIN electrodes themselves. Click here for a demo about the Krios.
 
The Krios system is optimized for easy hand held operation with an integrated touch probe.
Reduces the time and complexity of electrode registration and identification.
Captures marker positions to accuracy within 0.5mm RMS.
Provides .csv output format for easy import into specialized analysis software.
 
The Krios system can be ordered directly from BioSemi.

17 July 2015
More publications by ActiveTwo users.
Another example of BioSemi's ultra fast and comfortable headcap design.
 
Study: Early clue to why some children may have reading woes
   
   
Peer reviewed publications by active electrode (ActiveTwo) users:
 
Click here for all scientific BioSemi publications found on Google Scholar.
Click here for all open-access BioSemi publication found on PlosOne.
   

21 April 2015
Matlab TCPIP Client for ActiView available.

BioSemi has written this new example program in Matlab. This program is able to receive the data being sent over TCPIP by ActiView.
In ActiView, on the ActiView tab-page "TCP Server" you can configure ActiView to stream the acquisition data 'live' over the network.
This small example program is able to receive this data and display 1 channel.
Free for everybody to use. Available in the download section.


23 December 2014
OpenViBE support for ActiveTwo available.

OpenViBE is a free and open source software platform dedicated to designing, testing and using brain-computer interfaces. OpenViBE is software for real-time neuroscience (that is, for real-time processing of brain signals). It can be used to acquire, filter, process, classify and visualize brain signals in real time.


01 September 2014
BioSemi celebrates 15 years anniversary !

On September 1st. 1999, BioSemi started as a university spin-off introducing the first commercially electro physiology measurement system with active electrodes, battery powered front-end and fiber optic data transfer to the signal processing computer.
15 years later we are happy to see that these original design ideas have established themselves in the scientific community, leading to thousands of scientific publications.

To celebrate this success, we offer a 1000 Euro discount on the Base system price for every new system ordered between September 1st. and the end of 2014.


19 September 2013
BioSemi quadruples data throughput of ActiveTwo system.

MK2 AD-boxes, USB receivers and ActiView can be upgraded at no costs to feature 4 extra 'High-Speed' Speedmodes:
Speedmode 10: 256+8 channels @ 4 kHz
Speedmode 11: 128+8 channels @ 8 kHz
Speedmode 12: 256+8 channels @ 8 kHz
Speedmode 13: 128+8 channels @ 16 kHz

The 'MK2HS' firmware involves upgrading the firmware inside the AD-box, firmware inside the USB receiver and using ActiView706 or higher.
After this upgrade, when selecting Speedmodes 0,1,2,3 on the AD-box, then Actiview will display Speedmodes 10,11,12,13.
With the 'Normal' firmware, Speedmode positions 0,1,2,3 are used for Daisy chaining. (Displayed in Actiview as 0,1,2,3)
With the 'High-Speed' firmware, Speedmode positions 0,1,2,3 are used for the above High-Speed Speedmodes. (Displayed in Actiview as 10,11,12,13)

With the MK2HS 'High-Speed' firmware:

- Daisy-chaining is not possible. (because the MK2HS firmware replaces the Daisy-chain Speedmodes 0,1,2,3 with the 'High-Speed' Speedmodes 10,11,12,13, Daisy chaining is not possible anymore when your AD-box and USB receiver have been programmed with the 'High-Speed' firmware)
- No AIB can be connected.
- Not compatible with other firmware, not compatible with other USB receivers, not compatible with other AD-boxes. (MK1 or MK2)
- No Jazz eyetracker possible, ABR mode is possible.

05 September 2013
VIDEO: Training the Older Brain in 3-D

Check out the Users section for more videos.


11 July 2013
Various video footage added to the Users page

Check out the Users section for these videos.


14 June 2013
ActiView for Mac Version 7.05

ActiView Version 7.05 for Macintosh released. Check out the Download section.
BioSemi remains to be the only manufacturer of electrophysiologic measurement systems that supports all 3 mainstream platform: WIndows, Macintosh and Linux.


31 May 2013
Electrode coordinates file now also includes Cartesian coordinates.
New Electrode coordinates file, including calculation to cartesian.
- Available at the download page.
 
 
 
 
 

19 February 2013
ActiView 7.05 released
New versions added for 1280x1024, 1600x900 and 1440x900 resolutions.
- all is available at the Latest ActiView page.
 
 
 
 
 

24 January 2013
ActiveTwo shown on RTL Germany

BioSemi ActiveTwo system shown on RTL Germany.
Neuromarketing-labs uses several BioSemi 64+8 channel ActiveTwo systems.


23 August 2012
ActiView 7.03 released
- Support for new Jazz eyetracker firmware.
- Support for SleepSense respiration belt.
 
 
 
 
All is available at the download page.

11 November 2011
ActiView for Mac.

ActiView is now also available for Mac. Check out the Download section.


04 November 2011
Linux Tools.

ActiView and all the LabVIEW tools are now also available for Linux. 'BDF to EDF Converter', 'FileCropper', 'BDFreader', 'Decimater', 'File Merger', 'BDF Repair Tool', 'Reducer Tool'. Check out the Download section.


17 October 2011
Headbox ACT32 added to website.

Every Headbox gives the possibility to connect 32 Active TouchProof electrodes to a standard ActiveTwo acquisition system.
- Inputs: 32 x Touchproof connector, 1 x CMS/DRL DIN4 connector.
- Outputs: 1 x 68-pole fine pitch female connector.
- Including 68-pole male to 68-pole male flatcable. (1 meter)


04 April 2011
New publications added.

Selected publications have been added to our publications page. The 2 papers from the group of Prof. Andre Revil describe the successful application of the ActiveTwo for geophysical measurements. Surely an unexpected application of our active electrode technology outside the field of electro physiology.

For a complete overview of scientific results based on recordings made with BioSemi systems please check out:
All Scholar BioSemi publication found on Google.


22 April 2010
New Channel reducer for BDF files available.
Reducer Tool
Tool to reduce the number of channels in a BDF file. Free choice of channels to be converted to the new BDF file.

19 March 2010
BioSemi offers Multi-platform operation !
A new driver family for the USB receiver is now available at the Download page.
This new family of drivers offers 2 unique features:
1) Versions are available for Windows, Mac and Linux. Since BioSemi acquisition software is written in open source, platform independent LabVIEW programming language, essentially, the same source code can be transferred between the 3 platforms. Consequently, BioSemi is the first manufacturer of electro physiological instrumentation who is able to offer a complete platform independent system.
2)

The 'Stride' parameter is now adjustable. The stride parameter controls the burst length used in the USB transfer. This burst length is a trade-off between making the system as 'real-time' as possible. (minimal burst length) and processor load. A burst length of 64 msec stride is a value that works on most computers, for 2GHz Pentium 4's and newer. Stride values of 32, 16, 8, 4, 2 and 1 msec were tested successfully on recent Core 2 Duo machines. The minimal stride value of 1msec will satisfy even the most critical Brain Computer Interface (BCI) applications.


07 October 2009
New dealer for Colombia and South America.
De la Rosa will be representing BioSemi in Colombia and South America.

 


27 May 2009
New windows and Linux drivers available.
A new generation of drivers is now available for evaluation.
For more information and comments, please see the forum:
http://www.biosemi.nl/forum/viewtopic.php?t=76

 

 

30 March 2009
BDF file Repair Tool introduced.
If your PC crashes during acquisition, the BDF header will not list the correct file length. Some review programs may crash on such an incorrect BDF file header. This repair tool corrects the file length in the header.

 

All is available at the download page.

08 October 2008
BDF file reader updated.
A new version of the basic BDF file reader is available for download complete with LabVIEW source code or as an executable. (use the LabVIEW runtime engine 8.2)
The new version reads files with sample rate's from 32 Hz to 16384 Hz

 

 
 
 
 
All is available at the download page.

20 May 2008
58 new Users added.
  Making the total number of ActiveTwo users listed on the BioSemi users page 240

20 March 2008
Vista drivers released
BioSemi acquisition drivers now also suitable for Windows Vista.

 

 
 
 
 
All is available at the download page.

09 August 2007
ActiView 6.04 released
ActiView is now compatible with direct interfacing with 'Jazz' eye tracker system model 'novo' (the Jazz novo model has increased sample-rate and extra X&Y gyro channels to determine head position)

 

 
 
 
 
All is available at the download page.

29 March 2007
ActiView 6.03 and 4 x tool released
New versions released for:    

ActiView
ActiView Light
BDF to EDF Converter
BDF file Cropper
BDF file decimator
BDF file Merger

New features:
- Compiled in LabVIEW 8.2
- Compatible with file sizes larger then 2 GByte.
- ActiView now displays the 8 TP channels with 1 click.
- Converter, Cropper and Decimator tools are updated.
- New BDF Merger tool added.

     
All is available at the download page.    

01 February 2007
New Accessory
Photo cell
 
Light detector for direct connection to the Ergo input.
The sensor consists of a sensitive PIN diode with integrated trans impedance amplifier. This sensor can be used for measuring visual stimuli simultaneously with the physiological data (EEG). This allows checking the timing accuracy of the used stimulus setup.
 
More information available on the accessory page.

01 February 2007
New Accessory
Ergo input
 
Extra Aux connector with bi-polar analog input for isolated sensors.
Bi-polar analog input on the front of the AD-box for all kinds of general isolated auxiliary signals (e.g. custom made GSR measurement device, microphone, photo sensor). DIN 5-pole input connector on AD-box front-panel. Single 5 Volt power supply available (300 mA max)
- Including 2 ADC channels.
- Input range: +/- 1 Volt.
 
More information available on the accessory page.

07 July 2006
ActiView 6.00 released

Compiled in LabVIEW 8.0.1, many source code changes.
No file limit anymore (LabVIEW 8 handles files > 2 GByte).
Down sample sinc filter upgraded to 5th order (was 3rd order).
Down sample options added, max down sampling ratio is now 1/64th.
Screen length of 64 seconds added.
"free on disk" indicator added, displaying seconds left when saving to disk.
Support for Jazz interface via trigger port on USB receiver (sync clock on pin 32, Jazz data via pin 16)
ActiView now also available in 1440x900 resolution especially for laptops.

 
Download the latest ActiView on the ActiView page.

04 July 2006
ActiView CORE released

Acquisition-core of the ActiView program. Made with LabVIEW 8.0.1
This allows LabVIEW developers to built their own acquisition program by just using the basic acquisition core of ActiView. The core just reads the ring-buffer and provides the incoming data and trigger/status channel as array ready for further processing. The code also gives insight in the basic setup of ActiView.

 
 

24 February 2006
43 new Users added.
  Making the total number of ActiveTwo users listed on the BioSemi users page 182

26 January 2006
Free GSR upgrade available.

Following up on a forum discussion about various GSR measurements methods, we have developed an alternative for the 'high-frequency' GSR method that we have used so far. The GSR module can now be delivered with either 16 Hz or 512 Hz excitation current. (Automatic detection in ActiView). The 16 Hz version displays and saves in nanoSiemens, whereas the 512 Hz version displays and saves in Ohm as before.
Read everything about it on the forum.

 
 

25 January 2006
ActiView 5.36 released

ActiView now able to acquire data from the Jazz eye tracker and from the AIB (Analog Input Box) at the same time.

 
Download the latest ActiView on the ActiView page.

26 September 2005
ActiView 5.34 'Multi box' released

ActiView acquisition software is now capable of recording data simultaneously from a maximum of 4 'daisy chained' AD-boxes. This enables studies on up to 4 subjects with 128+8+sensors channels per subject. The total data output of 608 channels is interfaced by a single PC and stored into a single data file for further analysis. The daisy chain setup ensures that the data from the 4 subjects is fully synchronized. This unique feature (this technology is currently only offered by BioSemi), allows the exploration of a new field of research on multiple subjects.

 
Download the latest ActiView on the ActiView page.

21 July 2005
ActiveTwo Client added to download page.
ActiveTwo Client is a LabVIEW program capable of receiving the data being sent over TCPIP by ActiView.
Source code in LabView and an executable are available for download at the download page.

15 April 2005
New Accessories
Microphone
 
Microphone to record audio stimuli and responses. A highly effective built-in spherical filter minimizes wind and breath 'pop' noise. Connects directly to the standard BioSemi ActiveTwo Ergo input on the AD-box.
 
More information available on the accessory page.

08 April 2005
ActiveTwo AD-box updated to 280 channels.
The addition of 3 extra octal amplifier/converter modules brings the total number of channels of the ActiveTwo system to 280. (up from 256 on the previous version)
This allows the system to be configured for 256+8 electrodes and 7 additional sensors on 2 kHz. For example, you can now use the system with a 256 channel headcap + 8 FLAT electrodes + 7 sensors. In addition, the amount of available channels in higher sample rate modes (4,8 and 16 kHz) was also increased substantially.
The update opens even more opportunities in high density EEG and BSPM recordings.

07 April 2005
ActiView 5.30 released.
The Following changes have been made:
New feature: Suitable for ActiveTwo Mk2 (280 channels), downwards compatible with ActiveTwo Mk1.
New feature: Continuous battery indication on all Mk2 AD-boxes.
New feature: line width and cursor type selectable in CFG
New feature: Ergo display low-pass filter can now be switched on and off.
New feature: TCP/IP server added. Data can be streamed real time on the network/internet.

05 April 2005
New Accessories
Response switch
 
Response switches for direct connection to the AUX (front) connectors on the AD-box.
The setup with the response switches connected directly to the AD-box ensures accurate timing of the response moments (pulse is mixed directly with the incoming EEG signals) as well as optimal isolation of the subject (no grounded equipment near the subject).
 
More information available on the accessory page.
   
Presentation cable
 
The Presentation cable connects the stimulation PC (parallel port) with the trigger input/output connector (37 pin female sub-D) of the BioSemi USB receiver.
 
More information available on the accessory page.


21 March 2005
New scientific papers added on the research page.
2 new papers by Peter Praamstra (university of Birmingham) added to our research site. During 4years of using ActiveOne and ActiveTwo systems, Peter Praamstra's research resulted in no less then 8 papers. If you want your paper about research involving BioSemi products added to our website, please do not forget to sent us the reference.

08 February 2005
New Accessory: Jazz Eyetracker.
The Jazz eye tracker system is a development of a Polish academic research group, led by Prof. Ober.
A special 'synchronic' version has been made on OEM basis for BioSemi for interfacing directly with the ActiveTwo.
More info about the Jazz Eyetracker can be found on the accessory page.

19 January 2005
25 new Users added.
  Making the total number of ActiveTwo users listed on the BioSemi users page 84

10 November 2004
New utility to decimate (downsample) .BDF files available for download.
  This utility can be used to decimate (downsample) your BDF file into a smaller file.
Sample rate and bandwidth can be reduced by a factor of 2 or 4 or 8. A third order sinc filter is used to prevent aliasing.

10 July 2004
28 new Users added.
  Making the total number of ActiveTwo users listed on the BioSemi users page 87

06 July 2004
Electrode position coordinates file available for download.
 

Polar coordinates for all standard electrode caps (16, 32, 64, 128, 160, 256) are now downloadable in excel file format.
You can use these coordinates in your software to process BDF files.


28 June 2004
ActiView 5.21 released.
The Following changes have been made:
Compiled in new version LabVIEW 7.1
New feature: Decimate option enabled in all speedmode's (previously only available in mode 0 and 4)
New feature: Front panel connected response switches (connected to Aux/ERGO) can be routed to Trig 9 and 10 by a setting in the CFG file (RespSwitch = 0 or 1)
New feature: 1V, 2V and 4V options added to Y-scale selector on AIB tab page

18 May 2004
ActiView 5.19 released.
The Following changes have been made:
New feature: Open ActiView+CFG file with a Windows shortcut. With this new feature, it is possible to make Windows shortcuts which automatically open ActiView with a specific CFG file.
Bug repaired: When only GSR1 was selected and a CFG file with this setting is saved and loaded again, then the 'Aux chart' was wrongly disabled.
Bug repaired: When the 'Aux chart' was disabled (by editing the CFG file manually), then with saving the sensors 'as displayed', the triggers were saved in channel 2 instead of in the trigger channel (last channel). Contact BioSemi for having your files repaired, if needed.
AIB offset graph scaling bug repaired.

23 April 2004
New FAQ question added.
How to make your own Presentation to BioSemi cable ?

01 April 2004
BioSemi discussion forum online.
 
The new BioSemi discussion forum is now on-line at http://www.biosemi.nl/forum
We hope that the forum will quickly grow into a lively platform for discussions related to scientific research with BioSemi products. In the mean time, we would appreciate all your suggestions for improvements to the forum web site, please do not hesitate to email your comments.

25 March 2004
New dealer for Russia: Polus Ltd.
  BioSemi is proud to announce our new dealer in Russia.
 

02 February 2004
ActiView 5.16 released.
The Following changes have been made:
High Resolution version introduced for 1600x1200. (This version only displays correctly on monitors with a resolution of 1600x1200 or larger). The Low Resolution version (1280x1028) has the same functionality and remains also available.
New option to automatically start a new file, when the selected file limit is reached.
This allows experiments with more then 2GByte of data. In addition, you can choose to save an experiment in several smaller files.
Various code optimalizations for increased speed of saving to disk.

22 January 2004
3 new utilities available for download.
 
BDF to EDF converter
Some brain analyzing products are technical not capable of reading high resolution 24 bit BDF files with full DC data. You can use this utility for converting your BDF files to 16 bit AC (high-passed) EDF files.
BDFreader
This simple file reader can be used to check your recorded BDF files.
FileCropper
This simple utility can be used to crop your large BDF files into smaller files.
It also can be used to repair BDF files with a wrong length value written in the header.

08 January 2004
New dealer for Japan: Mackie 3M Specialties.
  BioSemi is proud to announce our new dealer in Japan.
 

07 January 2004
ActiView 5.14 released.
The Following changes have been made:
During saving, the number of mono polar displayed channels could still be changed with the keyboard shortcuts (Page up/down). In 5.14, the Page up/down keyboard shortcuts have been disabled during saving.
To prevent the user from accidentally closing the acquisition during saving, the ActiView program window has been made "not closeable" as long as ActiView is acquiring data. This prevents corrupted header errors (-1, unknown length) and failures from closing the USB drivers not properly.
Keyboard shortcuts disabled when ActiView window is not active.
Keyboard shortcuts disabled when a numerical control is active.
Several LabVIEW code improvements: (Code in orange panel 2 simplified, Code cleaned up: error initialization constants were hidden behind outer while loop).
With the function keys F1-F8 it is now possible to set markers during acquisition.
The function keys F1-F8 have been "orred" with triggers 9-16, so the external triggers still work.
Function keys can thus be used to set markers in the file

04 December 2003
New FAQ question added.

What are the advantages of Active electrodes with respect to shielding ?
Old techniques reappear under misleading names. But is there really an advantage for the scientists ? Read the real story.


03 December 2003
13 new Users added.
  Making the total number of ActiveTwo users listed on the BioSemi users page 59

24 November 2003
ActiView 5.13 released.
ActiView versions 5 and higher are based on LabVIEW 7.0 and the new USB2 receiver.
The Following changes have been made:
- On/off switch for "DC reset at screen start" added to AIB chart.
- Bug in "Pause Save" button repaired (this button needed multiple clicks on very fast PCs).

31 October 2003
ActiView 5.12 released.
ActiView versions 5 and higher are based on LabVIEW 7.0 and the new USB2 receiver.
The Following changes have been made:
Keyboard shortcuts added:
"Enter" --> Start the acquisition.
"Home" --> Baseline reset (display only).
" Arrow up/down" --> Higher/lower gain.
"Arrow left/right" --> Tab-page to the left/right.
"Page up/down" --> Next/previous group of channels.
"No reference" pop-up window notice has been replaced by flashing Reference selection window.
AIB Tab-page can display/save the data in mono polar or bipolar mode.

28 October 2003
2 New FAQ questions added.
- How can I add additional features to ActiView ?
- How can I make my own acquisition software, interfacing direct with the USB2 receiver ?

08 October 2003
Research page papers updated.
 
On the Research-Papers page it's now possible to view and download published papers from researchers who use BioSemi equipment.

29 August 2003
New dealer for Switzerland/Australia/New Zealand: Neurospec
  BioSemi is proud to announce this new dealer for EEG, EMG and ECG products.
 

27 August 2003
NEW PRODUCT: USB2 receiver
As usual, BioSemi is the first in introducing innovative products.
BioSemi is the first company shipping it's systems with an USB2 interface.
Plug&Play and easy driver installation. (no cards to install, just plug the USB2 cable in the PC)
The USB2 receiver makes higher data rates possible. (288 channels @ 4KHz samplerate 24bit/channel)
The new Receiver allows direct interface with notebooks. In combination with the compact, light-weight battery-powered ActiveTwo with Active Electrodes (eliminated the need for a Faraday Cage), this is the only real portable 256 channel EEG/ECG/EMG laboratory available.
 
Also, as usual, BioSemi offers ActiveTwo customers attractive upgrade prices&possibilities. For 1400 Euro you can upgrade to USB2 and have all the advantages of doing acquisition on your notebook.

22 August 2003
ActiView 5.03 released. (for new USB2 interface)
ActiView versions 5 and higher are based on LabVIEW 7.0 and the new USB2 receiver.
The Following changes have been made:
Version only compatible with USB2 interface
In the .CFG file an extra setting has been introduced: "ElecGain".
When the system has been equipped with modules with a gain of 31,25nV/bit then set "ElecGain=0" (standard)
When the system has been equipped with modules with a gain of 125nV/bit then set "ElecGain=1" (BSM applications)
Warning "for research only" added
File limit bug corrected (program could run into 2GB Windows file limit before internal limit triggered proper closing of the file)
Window resized to dimensions available in Windows XP (smaller height than classic look)
Handling of arrays changed for more efficiency

04 July 2003
Persyst now supports .BDF file format.
All the software from the Persyst development corporation now is able to read the BioSemi .BDF file format. Also, all the trigger pulses generated by the BioSemi ActiveTwo system can be read straight into their software.

25 June 2003
ActiView 4.03 released.
ActiView version 4 and higher are based on LabVIEW 7.0 and thus need the new LabVIEW
RunTimeEngine 7.0. ActiView is the acquisition program for the ActiveTwo system. It is an open source program written in LabVIEW 7.0 New features are:
Source code upgraded to LabVIEW 7.0 (RunTimeEngine 7.0 or higher is needed to run
ActiView versions of 4.0 or higher).
Free channel selections now work with SHFT and CTRL, according to the standard
Windows convention.
Reset of LP filters at every screen start removed, processor load by filters decreased.
Low pass filter added to online average.

11 June 2003
12 new Users added.
  Making the total number of ActiveTwo users 46

04 June 2003
ActiView 3.44 released.
ActiView is the acquisition program for the ActiveTwo system. It is an open source program written in LabVIEW 6.1 New features are:
Saving to file can now be started and stopped by 2 reserved trigger codes.
On-line ERP result calculation.
Selectable screen lengths.

15 May 2003

"Pin-type" product page updated.
The BioSemi "Pin-type" Active electrode has been designed especially for mounting in BioSemi headcap's. The electrode has a sintered Ag-AgCl electrode tip, providing very low noise, low offset voltages and very stable DC performance.

17 March 2003
15 new Users added.
  Making the total number of ActiveTwo users 34

24 February 2003
Auditory Brainstem Response measurement ABR.
ActiveTwo Application example: Auditory Brainstem Response (ABR) measurement.
The high sample rate, high resolution and precise trigger timing makes the ActiveTwo very suitable for the demanding ABR measurement. Yet another example of the ActiveTwo's versatility. Read more....

04 December 2002
"Ultra Flat" product page updated.
The BioSemi UltraFlat Active electrode (11mm width, 17mm length, 4.5mm height) has been designed for all Body-surface applications. The flat shape makes the UltraFlat ideal for all EMG and ECG body surface measurements and also for EEG applications where the use of a headcap is less practical e.g.: sleep research.

12 November 2002
NEW PRODUCT: Analog Input Box.
The Analog Input Box (AIB) is an extra option to acquire additional analog input signals which have to be kept isolated from the subject. For example mains powered equipment. Up to 32 channels can be acquired simultaneously with up to 256 channels from the AD-box connected to the subject. A first fiber carries the data coming from the subject connected AD-box to the AIB, then a second fiber with the combined data goes from the AIB to the receiver where the total 288 channels are processed.

06 November 2002
New dealer for Spain.
  Starlab Spain has been appointed as the dealer in Spain for BioSemi.

11 October 2002
New FAQ question added.
  How to install the PCI-DIO-32HS, Nidaq drivers, RunTimeEngine and LabVIEW software ?

16 August 2002
First full 256 channel ActiveTwo system installed.
  The world's first 256 channel EEG system with active electrodes is now operational at the Biomedical Imaging Lab at the University of Houston. Director Prof. George Zouridakis has stimulated BioSemi to develop this technological breakthrough for his newly found laboratory.

05 April 2002
BioSemi starts delivering the new ActiveTwo (24 bit, 256 channels) system.
 

Specifications of the new system can be found here, further information will be made available during the coming weeks. The system will be demonstrated (April 14-16) by our US representative at the cognitive neuroscience society meeting in San Francisco. (Booth 311 and 312)

   

13 March 2002
BioSemi introduces BDF (BioSemi Data Format)
  The BDF file format is the same as the EDF file format except with 24 bit data records.

27 September 2001
Cortech Solutions added as new dealer.
  We are proud to announce that Cortech Solutions will be representing the BioSemi EEG and sEMG product-line in the USA & Canada.

13 September 2001
BioSemi adds Megis to it's software alliance partners.
  BioSemi is appointed as a dealer for the BESA package. The BioSemi hardware together with the BESA software forms a complete EEG analysis tool. A link to the BESA software can be found on the software page.

2 September 2001
Curry software now imports EDF files.
  On request, the Curry software is available with EDF file importer which enables all BioSemi hardware to now be used with Curry. A link to the Curry software can be found on the software page.

3 August 2001
ActiveOne now also measures blood flow and temperature.
  Temperature sensors and Plethysmograph sensors have been added at the accessories page.

28 July 2001
Prices page updated.
  Because of the devaluation of the EURO with respect to the US$ and because of the sharp increase of shipment costs, a slight increase of the price of the ActiveOne base system was inevitable. Therefore we had to increase the base price with 1000 EUR. Nevertheless, BioSemi remains by far the cheapest high quality multichannel biopotential measurement system.

2 July 2001
BioSemi will show the latest systems on the NFSI 2001 in Innsbruck.
  The large number of channels offered by BioSemi systems is especially useful in EEG and ECG research where source localization plays an important role. There for BioSemi will show it's products at the NFSI2001 technical exhibition. We look forward to meet you at our booth at the technical exhibition.

26 February 2001
ActiveOne now also features Active Strain gage sensors.
  BioSemi can equip your force transducers with a miniature precision strain gage amplifier. This makes your strain gage Active, the output signal is processed by the ActiveOne AD-box just like any other active sensor. More Information about these products are available on the Accessories page.

02 January 2001
ActiveOne now also features Respiration belt and GSR measurements.
  The ActiveOne system now also is suitable for measurements with respiration belts and measurements with Galvanic Skin Response. The ActiveOne is setup as an universal acquisition system for many different Active sensors, so besides the Active electrodes other Active sensors for physiological measurements such as Pressure and Force measurements are also possible. More Information about these products are available on the Accessories page.

11 December 2000
ActiveOne system successfully tested in MEG room.
  New tests further proves the exceptional flexibility of the ActiveOne system. The first no compromise system which can be used for all applications inside and outside the MEG/MCG room. Read story.

13 November 2000
Testing finished on 2 wire version of Active Electrode for systems with 144 to 272 channels.
  The current shipping versions of our Active electrode uses 3 connection wires. This prevented the use in headcap's with more then 144 channels, because this would result in too much bulk and weight of the large number of wires to the cap. BioSemi now presents a new version of the active electrode with only two wires. In this new design, the output signal and the negative powersupply use the same wire. All tests showed the performance of this ActiveTwo electrode to be identical with the successfully ActiveOne design. This breakthrough in Active electrode design opens the way to the practical realization of EEG systems with up to 272 channels, for which the PC interface under LabVIEW 6, has already been ready and tested for some months.


12 May 2000
LAUNCHING CUSTOMER STARTS USING ActiveOne system.

During the past weeks, the first 144 channel ActiveOne system was installed in the Behavioral & Brain Science Centre, University of Birmingham, UK. The system uses up-to 128 pin-typed active electrodes for mounting in a cap. Simultaneously 8 flat-type active electrodes are used for EMG recordings. The 8 remaining channels are used for strain gages measurements. All this data (144 channels x 2048Hz sample-rate x 16 bit) is processed with BioSemi acquisition software running under LabVIEW (windows 2000).

Dr. Peter Praamstra from the Behavioral & Brain Science Centre, University of Birmingham UK, started using this system for his new research program.

 
 
An example of his first measurements can be downloaded here.
 
The front-end behind the subject is a complete 144 channel acquisition system with battery-pack. All signals are pre-amplified on the electrode and digitized in the box and transferred to the PC through a single optical fiber. No separate headboxes or 19" racks as in competing systems.

22 March 2000
STORY ABOUT DEVELOPMENT HIGH DENSITY ACTIVE CAP ADDED
   
2 March 2000
FIRST PICTURES OF NEW FLAT VERSION OF ACTIVE ELECTRODE
   

27 January 2000
LabVIEW EXAMPLE VI WITH DIAGRAM ADDED TO DOWNLOAD PAGE.
FREQUENTLY ASKED QUESTIONS SECTION UPDATED
   

24 November 1999
TESTS WITH ACTIVE ELECTRODES SUCCESSFUL.

BioSemi has just just completed the tests of the first batch of series produced active electrodes.

The experience gathered with earlier designs now enables us to be the first company offering commercially available biopotential measurement systems with active electrodes. For reasons of subject safety and optimal performance, the active electrodes are not merely offered as a first-stage for conventional amplifiers. Instead, BioSemi has chosen to develop the active electrode as part of a fully integrated system consisting of electrodes, isolated AD-box, Powerbox and PC interface. This new ActiveOne system (versions from 16 up to 128 channels) will be available from approximately February 2000. Please feel free to email us for additional information. We are taking orders for the first series of EEG systems now, active multichannel surface EMG and BSM ECG systems will follow later in 2000.

To get an impression of the performance that can be achieved with the active electrode setup, you can download an EEG data-file with a player from our download site.

The electrodes were attached on the unprepared skin. The subject was sitting behind his computer, surrounded by electrical equipment. In this situation we were not able to record anything but hum and noise with conventional high-quality electrodes.