Abstract: A system to integrate and synchronize a plurality of signals for recording on a destination video recording device and/or for display on a monitor. The plurality of signals represent the response of a respective of a plurality of test subjects to certain stimuli. A plurality of test subjects view an audio-visual display from an audio-video source, such as a video cassette recorder, while respective EEG responses to the audio-video display are measured. The respective EEG responses are sent to respective processors and converted to graphical representations of the EEG signals. The graphical representations of the EEG signals and a signal from the source audio-video device are sent to respective destination VCRs and/or a respective destination audio-video recording device that records the data from both sources.

Abstract: A system to integrate and synchronize a plurality of signals for recording on a destination video recording device and/or for display on a monitor. The plurality of signals represent the response of a test subject to certain stimuli. A test subject views an audio-visual display from an audio-video source, such as a video cassette recorder, while an EEG response to the audio-video display is measured. The EEG response is sent to a processor and converted to a graphical representation of the EEG signal. The graphical representation of the EEG signal and a signal from the source audio-video device are sent to a destination VCR and/or a destination audio-video recording device that records the data from both sources. The destination audio-video recording device can send a composite signal to a destination VCR and/or a destination monitor to record and/or display the synchronized signals from the source audio-video recording device and the graphical representation of the EEG signal simultaneously.

Abstract: A headset and system for taking EEG measurements on the head of a test subject. The headset has a plurality of electrode sensors in predetermined anatomical positions on the head of a subject to take EEG measurements, for example of the subject's response to certain stimuli. The electrode sensors are formed of dry conductive foam rubber pads attached to conductor elements. An individual shielded cable is attached to each sensor to carry the detected signal to a signal processor. The sensors may be formed of a carbon impregnated foam rubber pad that offers high conductivity. The sensors do not require wetting agent, and thus can be used in a very time efficient manner, and can be easily replaced for sanitary considerations.