Patent ID: 7546158

Claim:
A method comprising: generating a plurality of stimuli from a plurality of symbols, wherein the plurality of symbols comprises an attended-to symbol; generating a signal indicative of brain activity while generating the plurality of stimuli, wherein the signal indicative of brain activity includes a first portion indicative of brain activity responsive to stimulus, and wherein the signal indicative of brain activity further includes a second portion substantially independent of response to stimulus; processing the signal indicative of brain activity to generate a processed signal, wherein processing the signal indicative of brain activity comprises increasing the relative magnitude of the first portion with respect to the second portion; determining the attended-to symbol based on the processed signal; generating a display of N symbols; and attending to the attended-to symbol of the N symbols, wherein generating the plurality of stimuli comprises highlighting a first plurality T of the N symbols at a first time, and highlighting a second plurality N-T of the N symbols at a second time.