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Title page for ETD etd-01072013-211119


Type of Document Master's Thesis
Author Kim, Nam Soo
Author's Email Address nam.s.kim@vanderbilt.edu
URN etd-01072013-211119
Title The observation of contingent negative variation with reaction times in non-human primates
Degree Master of Arts
Department Psychology
Advisory Committee
Advisor Name Title
Geoffrey F. Woodman Committee Co-Chair
Jeffrey D. Schall Committee Co-Chair
Keywords
  • contingent negative variation
Date of Defense 2013-05-10
Availability unrestricted
Abstract
A half-century's worth of research has established the existence of numerous event-related potential (ERP) components measuring different covert cognitive operations in humans including preparing responses to anticipated events. An ERP component referred to as contingent negative variation (CNV) is believed to be an index of movement preparation and initiation during the interval between a warning stimulus and an imperative stimulus triggering a response. Using an electrophysiological technique analogous to procedures for recording scalp ERPs from humans, we show that macaque monkeys exhibit a CNV during a memory-guided saccade task. First of all, we observed the highest amplitude of CNV over the motor cortex. Second, the amplitude in CNV was related to the reaction times. Thus, we conclude that CNV observed in non-human primates like CNV observed in humans is a covert mechanism underlying the preparation and initiation of voluntary movements.
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