Sheer, Daniel E.2022-06-222022-06-22197012325144https://hdl.handle.net/10657/9673The EEG in five frequency bands was studied in the occipital and frontal areas of two subjects performing a behavioral task. Each trial of the task was divided into pre-stimulus, stimulus, and post-stimulus periods, with a duration of 10 seconds each. All trials demonstrating activity which was thought to be of muscular origin were discarded. The resulting data showed the following: (1) Activity at 20 Hz was consistently lower during the stimulus period in the occipital electrodes. (2) Activity at 40 and 50 Hz increased in the occipital derivation during the stimulus period in both cases. (3) None of the comparisons showed any significant changes in the F3-Fz derivations. Tentative hypotheses were advanced relating the decrease in 20 Hz to behavioral "inhibition" and the increase in 40 and 50 Hz to "facilitation" or possibly "orientation". It was suggested that these data might also be interpreted as electrical corollaries of short term memory processes.application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.ElectroencephalographyThesisreformatted digital