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Comparator Dysfunction

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The hypothesis was supported since individuals with OCD showed a heightened and prolonged electrophysiological response to error signals that correlated with the severity of their OCD symptoms. They also concluded that the medial frontal was a source for this activity since their data points to this region as being one of the sources of signal errors and this area is consistent with a locus in the anterior cingulate cortex (Dehaene et al.,1994; Holroyd et al., 1998). Overall, these results support theories linking OCD symptoms to hyperactive error signals in a frontal-striatal thalamic-frontal circuit (Pitman, 1987; Schwartz, 1997). They did not find a significant difference in ERN-like activity on corrected trials between groups. However, they stated that a comparator dysfunction does not necessarily predict such an effect in a Stroop task. Rather, the dysfunction could be …show more content…

This theory states that compulsive behaviors are analogous to the displacement behaviors of animals such as repetitive, purposeless pursuits, such as a dog chasing its own tail performed by animals in a clear state of conflict. Hence, these may be primitive, adaptive behaviors (behaviors originally meant to reduce danger) that are activated inappropriately in OCD. Even though the conflict-displacement account has been criticized (Jakes, 1996), our data suggest that the general principle is worthy of further study. The weaknesses of this study were the small number of participants and the exclusion of left-handers. Although initially that might be considered a strength, it eliminates an entire set of the population that could survive from OCD, hence it limits the pool of applicants and the sample size of the study. Strengths of the study were the methodological pluralism by excluding confounding variables such as normal vision, color vision

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