Active3 is the next generation of biopotential measurement systems for scientific research. The Active3 its cutting-edge SAR analog-to-digital converter technology offers perfect noise spectrum with total absence of spurious tones. BioSemi's third-generation active electrodes and amplifier system - the ActiveThree - combines extremely high signal quality, portability, low power consumption, and ease of use.

The Active3 can be configured with up to 142 channels of EEG/EXG electrodes and sensors. All 142 channels are fully DC-coupled and equipped with a novel 24-bit SAR (successive approximation register) A/D converter. This is the latest ADC technology available on the market, allowing for the highest signal quality with high interference suppression, offering a clean frequency spectrum. New low-voltage components further allow for lower power consumption compared to its predecessors. As a result, a much smaller-sized battery is used, leading to a decrease in both the size and weight of the main AD-box. Additionally, the battery can be purchased anywhere locally, as it is a standard single battery cell. Auxiliary sensors such as respiration belts, GSR/EDA sensors, and response switches are now automatically detected and configured by the system. Last but not least, the CMS/DRL circuitry has improved in interference suppression.

The increased international shipping tariffs have forced BioSemi to let go of the free shipping for orders above 5000 Euro.
From today, BioSemi will always charge shipping costs, based on the shipment destination and on the weight of the package.

ActiTools has the following features:
- Trigger: Shows how to convert between binary to decimal trigger codes.
- Muter: Make a new BDF file with selected Trigger lines kept Low from an existing BDF file. (new in version 9.02)
- Cropper: Crops large BDF files into smaller files.
- Merger: Merges 2 .bdf files into 1 .bdf file.
- Decimator: Decimates (downsample) your BDF file into a smaller file.
- Reducer: Reduces the number of channels in a BDF file.
- Converter: Converts 24 bit BDF files to 16 bit AC (high-passed) EDF file.
- Repairer: Make a new BDF file from an existing BDF file with a corrupted file header.
- Editor: Edit the ID fields and channel labels in an existing BDF file.
- Configurator: Edit items which are not editable from ActiView in an existing configuration (*.cfg) file. (new in version 9.02)
- Equalizer: Make new BDF file with equalized ABR channels from an existing BDF file. (lower high-pass point) (new in version 9.02)

ActiTools has the following features:
- Trigger: Shows how to convert between binary to decimal trigger codes.
- Cropper: Crops large BDF files into smaller files.
- Merger: Merges 2 .bdf files into 1 .bdf file.
- Decimator: Decimates (downsample) your BDF file into a smaller file.
- Reducer: Reduces the number of channels in a BDF file.
- Converter: Converts 24 bit BDF files to 16 bit AC (high-passed) EDF file.
- Repairer: Make a new BDF file from an existing BDF file with a corrupted file header.
- New in version 9.01: editor for BDF headers.

Headcap Maps to show the offsets on the actual cap location were introduced in ActiView 8.11. However, a drawback that remained in practice was that the acquisition computer is often (and preferable) not located close to the subject. The headcap map would ideally be shown on wireless device that can be hold adjacent to the subject's head, thus allowing immediate indication and correcting of electrodes with bad skin contact. This scenario is now offered in ActiView 8.12 (or higher), in combination with the CapMap App running in any browser (Safari, Chrome, Firefox, Edge, etc) on any mobile device (smart phone, tablet, laptop, etc.)

ActiView is an open source development by BioSemi BV (https://www.biosemi.com/download/LatestActiView/ActiView812/ActiView812.zip)
CapMap App is an open-source development by NEUROSPEC AG (https://neurospec.com/News#ns-news-2109)

Update 16 August: Movie about CapMaps: (https://www.youtube.com/watch?v=C6nFmsFgbO4)

On September 1st. 1999, BioSemi started as a university spin-off, introducing the first commercially available electro physiology measurement system with active electrodes, battery powered front-end and fiber optic data transfer to the signal processing computer.
20 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 full spare electrode set on every Base system ordered between September 1st. and the end of 2019.

20 Years BioSemi Discount:
- 1 free electrode set on a 32 channel ActiveTwo system
- 2 free electrode sets on a 64 channel ActiveTwo system
- 4 free electrode sets on a 128 channel ActiveTwo system
- 8 free electrode sets on a 256 channel ActiveTwo system

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.

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.

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.

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)

Check out the Users section for more videos.

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)

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.

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.

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

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.

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.

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.

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)