Retrieval-induced forgetting under psychosocial stress : No reduction by delayed stress and beta-adrenergic blockade
Retrieval-induced forgetting under psychosocial stress : No reduction by delayed stress and beta-adrenergic blockade
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2014
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Neurobiology of Learning and Memory ; 110 (2014). - pp. 35-46. - ISSN 1074-7427. - eISSN 1095-9564
Abstract
Retrieval-induced forgetting (RIF) is the phenomenon that ‘retrieval-practice’, the repeated retrieval of a subset of initially learned material, can impair the recall of episodically related memories. Previous studies showed that RIF is eliminated when retrieval-practice is carried out under psycho-social stress, anxiety, or in negative mood. However, pharmacological manipulation by hydrocortisone did not eliminate the effect. This study investigated the effect of beta-adrenergic blockade on stress-induced modulations of RIF, addressing possible interactive effects of the glucocorticoid and sympatho–adrenomedullary systems. Participants learned categorized word lists and then received either 60 mg propranolol or a placebo. After 90 min they were exposed to the TSST. A third group did not receive any medication and performed a non-stressful control task with the same timing as the other two groups. Finally, all participants underwent retrieval-practice and final recall. Both TSST groups exhibited a stress-induced increase in cortisol-levels, and the placebo group also exhibited large increases in markers of sympathetic nervous system activity and more psychological distress at the time of retrieval-practice. Although, overall recall was poorer under stress, an overall RIF effect emerged irrespective of group and showed no clear modulation by stress with or without beta-adrenergic blockade. In previous demonstrations of RIF elimination by negative emotion, state induction and retrieval-practice followed very briefly after initial learning. Given that both the previous study of hydrocortisone effects on RIF and the present study used longer delays between learning and retrieval-practice, the possibility that stress effects on retrieval-practice eliminate RIF only relatively briefly after learning is discussed.
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150 Psychology
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Memory, Retrieval-induced forgetting, Psychosocial stress, HPA-axis, Adrenergic system, Trier Social Stress Test, Beta-blockade
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DREIFUS, Laura, Harald ENGLER, Johanna KISSLER, 2014. Retrieval-induced forgetting under psychosocial stress : No reduction by delayed stress and beta-adrenergic blockade. In: Neurobiology of Learning and Memory. 110, pp. 35-46. ISSN 1074-7427. eISSN 1095-9564. Available under: doi: 10.1016/j.nlm.2014.01.010BibTex
@article{Dreifus2014Retri-30340, year={2014}, doi={10.1016/j.nlm.2014.01.010}, title={Retrieval-induced forgetting under psychosocial stress : No reduction by delayed stress and beta-adrenergic blockade}, volume={110}, issn={1074-7427}, journal={Neurobiology of Learning and Memory}, pages={35--46}, author={Dreifus, Laura and Engler, Harald and Kissler, Johanna} }
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