Brain Waves Brain Fingerprinting Forensic Science Biometrics etc

Brain Waves

Brain Fingerprinting Forensic Science, Biometrics, etc…

Brain-Computer Interface Research: A non-invasive example J. Bayliss research group – Rochester Institute of Technology. Will this be us? Goal: “To develop a system that performs real-time EEG signal analysis in order to generate control commands for environmental control, communication, or even simple driving commands” The Hope: “A big signal like the P 300 can be recognized via single trial recognition in order to trigger commands on the VR car. We currently have around 85% average recognition accuracy. ” Success: “P 300” signal response is evoked, trained via biofeedback, used to activate things in a virtual apartment.

Electroencephalograph - EEG Brain has continuous electrical activity that can be recorded Pairs of electrodes attached to scalp form distinct channels Weak signal ~millivolts is sent thru amplifier Continuous output recorded via galvanometer.

Each pair of electrodes forms a channel to measure something maybe potential difference between them? Localized anomalies pinpoint physical brain problems Computer waveform analysis: high-speed samples taken 200 times/second to convert analog>digital Commercially available to run on PCs and Macs, you can even use it qualitatively if you’re bad at math

Other Non-Invasive Brain Mapping Techniques Positron emission tomography event-related potentials electro-and magnetoencephalography, magnetic resonance imaging single-photon emission tomography boring