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Title: Neuronal Correlates of Perceptual Salience in Local Field Potentials in the Primary Visual Cortex
Keywords: Perception, Scene segmentation, Neural coding, Striate cortex, Local field potential, Synchrony
Issue Date: 12-Mar-2012
Citation: YASAMIN MOKRI (2012-03-12). Neuronal Correlates of Perceptual Salience in Local Field Potentials in the Primary Visual Cortex. ScholarBank@NUS Repository.
Abstract: It has been shown that changing the saliency of figure can affect perception and, consequently, the performance of the subjects in figure-ground segregation. However, the mechanism underlying this process is still not well understood. In this study, electrophysiological recordings were performed in the striate cortex of macaque monkeys while they performed a contour detection task. The visual saliency of the contour was changed throughout the experiment, and the aim of the study was to discover if the neuronal responses were modulated as a function of visual saliency. Frequency domain analysis techniques were applied to the local field potentials recorded on single electrodes and also simultaneously on pairs of electrodes. Neuronal responses on single electrodes and the synchrony of the simultaneously recorded responses exhibited modulation as a function of visual saliency at some sites. This may indicate that primary visual cortex can contribute to figure-ground segregation very early in vision.
Appears in Collections:Ph.D Theses (Open)

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