Title

The Role of Early Visual Cortex in Global Motion Processing

Advisor

Pratte, Michael S.

Committee Member

Eakin, Deborah K.

Committee Member

Moss, Jarrod

Date of Degree

1-1-2018

Original embargo terms

Visible to MSU only for 3 years

Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science

College

College of Arts and Sciences

Abstract

Both visual area V1 and the medial temporal (MT) region of the human brain play a role in motion perception. V1 is thought to process "local motion," such as the movement of a single bird flying across a relatively small part of space, while MT is thought to process "global motion," such as the movement of an entire flock of birds flying across the sky. However, recent studies using fMRI to measure human brain activity have identified signals in V1 that appear to be global motion signals, although it is unclear whether these are related to global motion processing or stem from some other process. In two experiments, a series of stimulus manipulations were conducted to determine the extent to which these signals in V1 really reflect global motion. Although initial results have so far proven inconclusive, they highlight discrepancies between previous results, suggesting that these motion signals in V1 may be more interesting than researchers have assumed.

URI

https://hdl.handle.net/11668/19547

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