Patent ID: 6792304
Filing Date: 2004-09-14
Classification: A61B

Abstract:
A method of mass assessment of psychological response in a cognitive task for a customer including the steps of:obtaining input data representing a cognitive task from a customer; transmitting input data signals representing the cognitive task from a central control site to a plurality of selected test sites remote from the test site over a network; presenting control signals simultaneously with the cognitive task to subjects at each or at least some of the selected test sites; detecting brain response signals from the subjects at the selected test sites to said control signals and said cognitive task; transmitting brain response signals to the central control site over said network; computing variations in brain activity of said subjects by calculating amplitude and/or phase and/or coherence of steady state visually evoked potentials (SSVEP) from said brain response signals for each selected site; and computing output data for the customer representing said variations in brain activity to different parts of said cognitive task.