–Characterize the cortical processes of inhibition believed to be captured by the interference effect in the Hayling Sentence Completion Task (HSCT).

Inhibitory control is emerging as a common deficit across many neurological disorders such as attentional disorders, Post Traumatic Stress Disorder and Parkinson’s Disease. A commonly used clinical measure of inhibitory control is The Hayling Sentence Completion Task (HSCT). In separate blocks, the HSCT requires participants to complete a sentence with a word that is either semantically congruent or incongruent with the sentence. Incongruent responses are reliably slower compared to when the sentence is to be completed in a congruent sensible way. It is theorized that the delay is due to the need to restrain access to a strongly elicited, but goal-incorrect, congruent response. Despite its prolific use in cognitive screening and neurological diagnosis, little is known about the brain mechanisms that support this behavioral effect. This project seeks to identify cortical mechanisms of inhibitory control implicated in the HSCT using known electroencephalographic markers of suppression. Illumination of the neural correlates of the HSCT will impact its use in clinical screening, diagnosis, and the development of treatment programs.

–Exploring the frontal and posterior neural dynamics of taboo interference.

–Investigating Inhibitory control of the inner voice.

–Training selective visual and auditory attention.