Size of the corpus callosum (not age) mediats congruency effect in the motor cortex

Resource Information

The work Size of the corpus callosum (not age) mediats congruency effect in the motor cortex represents a distinct intellectual or artistic creation found in University of Missouri Libraries. This resource is a combination of several types including: Work, Language Material, http://bibfra.me/vocab/marc/Manuscript, Books.

Label

Size of the corpus callosum (not age) mediats congruency effect in the motor cortex

Statement of responsibility

by Emily Wee

Creator

• Wee, Emily, 1966-

Subject

• Dissertations, Academic -- University of Missouri--Columbia -- Psychology
• Microfilm.
• Electronic books
• Older people
• Human information processing
• Corpus callosum -- Size

Language

eng

Summary

Aging is known to have profound effects on information processing. These changes have been described in several ways including generalized slowing of processing speed, working memory deficits, and impaired inhibitory processes. Previous studies have shown that the effects of interference-induced conflict increase with age. It is unclear, however, how these behavioral effects map onto the brain. Specifically, here we are investigating whether age-related decline is evident in the motor cortex, where conflict effects have been shown to occur. Normal aging is also associated with atrophy of the corpus callosum, a structure that may be particularly relevant in response conflict tasks involving cross-hemisphere interactions. In this dissertation, we investigated whether normal aging and individual differences in the size of the corpus callosum mediated the congruency effect in a spatial Stroop task. The results indicated that age per se did not affect response conflict at the level of the motor cortex. In contrast, the size of the corpus callosum played a significant role in affecting conflict processing, regardless of age. These findings were discussed in the context of cross-hemisphere interactions in cognitive processing

Additional physical form

Also available on the Internet.

Cataloging source

MUU

Degree

Ph. D.

Dissertation year

2004.

Government publication

government publication of a state province territory dependency etc

Granting institution

University of Missouri-Columbia

Illustrations

illustrations

Index

no index present

Literary form

non fiction

Nature of contents

• bibliography
• theses

Target audience

specialized