Acute stress reduces reward-related neural activity: Evidence from the reward positivity
| Autor: | Kreshnik Burani, Austin J. Gallyer, Thomas E. Joiner, Jon Ryan, Greg Hajcak, Carson Jordan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Future studies Physiology Electroencephalography Audiology 03 medical and health sciences Behavioral Neuroscience Reward system Neural activity 0302 clinical medicine Reward Reward sensitivity Medicine Humans Acute stress Association (psychology) Set (psychology) Evoked Potentials Depression (differential diagnoses) Depressive Disorder Major medicine.diagnostic_test Endocrine and Autonomic Systems business.industry Depression medicine.disease 030227 psychiatry Psychiatry and Mental health Neuropsychology and Physiological Psychology Mood disorders Major depressive disorder business 030217 neurology & neurosurgery psychological phenomena and processes Stress Psychological |
| Zdroj: | Stress (Amsterdam, Netherlands). 24(6) |
| ISSN: | 1607-8888 |
| Popis: | Stress and blunted reward processing are risk factors for Major Depressive Disorder (MDD). The experience of acute stress reduces fMRI correlates of reward-related neural activity; however, few studies have examined how acute stress impacts measures of reward derived from event-related potentials (ERPs). The current study examined the impact of an acute stressor on the Reward Positivity (RewP), an ERP that indexes reward sensitivity, in twenty-six college students. Participants completed a monetary reward task while they placed their left hand in cold water set at 13 °C (i.e. acute stress condition) and again while their hand was placed in room temperature water (i.e. control condition). These conditions were separated by one week and performed in a counter-balanced order across participants. The results revealed that the RewP amplitude was blunted in the acute stress condition compared to the control condition. Moreover, there was a trend toward this effect interacting with self-reported depressive symptoms: the RewP was reduced only among individuals who reported low depressive symptoms. The current study suggests that an acute stressor reduces the RewP, and that this effect might be moderated by current depressive symptoms. Future studies might examine the temporal association between reward processing and stress, and how they interact to predict depressive symptoms.LAY SUMMARYThe current study examined the impact of acute stress on the brain's reward system. The results indicated that acute stress reduced activity within the brain's reward system, particularly among individuals with low depressive symptoms. |
| Databáze: | OpenAIRE |
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