An investigation of the neural correlates of cognitive and response inhibition
Inhibition, as a cognitive control process, can be divided into two discrete categories: automatic inhibition and active inhibition. While active inhibition includes both response inhibition (the suppression of prepotent motor response) and memory inhibition (the suppression of either encoding or retrieval), the majority of behavioral and neuroimaging studies have assumed that both are subserved by the same underlying mechanism and rely on nearly identical neural networks. However, there have been no further attempts to investigate the degree to which active inhibition is in fact a unitary process. The current project will use a variety of neuroimaging methodologies to examine the degree to which encoding, retrieval, and response inhibition are mediated by similar neural processes.