Event-related potentials in performance monitoring are influenced by the endogenous opioid system

Neuropsychologia
Daniela M PfabiganClaus Lamm

Abstract

Recent research suggests that not only the dopamine neurotransmitter system but also the endogenous opioid system is involved in performance monitoring and the generation of prediction error signals. Heightened performance monitoring is also associated with psychopathology such as internalizing disorders. Therefore, the current study investigated the potential link between the functional opioid peptide prodynorphin (PDYN) 68 bp VNTR genetic polymorphism and neuronal correlates of performance monitoring. To this end, 47 healthy participants genotyped for this polymorphism, related to high-, intermediate-, and low-expression levels of PDYN, performed a choice-reaction task while their electroencephalogram (EEG) was recorded. On the behavioural level, no differences between the three PDYN groups could be observed. EEG data, however, showed significant differences. High PDYN expression individuals showed heightened neural error processing indicated by higher ERN amplitudes, compared to intermediate and low expression individuals. Later stages of error processing, indexed by late Pe amplitudes, and stimulus-driven conflict processing, indexed by N2 amplitudes, were not affected by PDYN genotype. The current results corroborate the n...Continue Reading

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Citations

May 25, 2016·Social Cognitive and Affective Neuroscience·Daniela M PfabiganClaus Lamm
May 3, 2021·Psychoneuroendocrinology·D M PfabiganC Lamm

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