Type of Document Dissertation Author Knebel, Timothy F. URN etd-02132009-171704 Title Event-related potentials during auditory discrimination :attentional and intentional effects Degree PhD Department Psychology Advisory Committee
Advisor Name Title Crawford, Helen J. Committee Chair Beex, A. A. Louis Committee Member Harrison, David W. Committee Member Lickliter, Robert E. Committee Member Prestrude, Albert M. Committee Member Pribram, Karl H. Committee Member Keywords
Date of Defense 1995-05-05 Availability restricted Abstract
The purpose of this dissertation study was to assess the neurophysiological activity associated with selective attention, response selection, and response inhibition. The subjects were 27 right-handed college students, 14 men and 13 women, aged 18-21. They performed a go/no-go auditory discrimination task while EEG was recorded from 19 monopolar electrode sites and averaged for evoked potentials. Amplitudes and latencies were measured for four event-related potentials (N1, P2, N2, and P3) at three midline electrode sites (Fz, Cz, pz) and eight bilateral sites (Fp1, Fp2, F3, F4, C3, C4, P3, P4).
Measures from the midline and bilateral sites were subjected to separate repeated measures ANOVAs for within subjects factors of condition (go and no-go), region (prefrontal, frontal, central, and parietal), and hemisphere (left and right). Grand averages and topographic isopotential maps were generated for each component and condition.
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