{"title":"Motivation meets sleep: tuning arousal via nucleus accumbens and Basal Ganglia circuits.","authors":"Fares J P Sayegh, Patricia Bonnavion","doi":"10.1038/s44323-025-00059-9","DOIUrl":null,"url":null,"abstract":"<p><p>Traditionally linked to motor control and motivation, the basal ganglia, particularly the nucleus accumbens (NAc), are now recognized as central to sleep-wake regulation. Rodent studies highlight the NAc as a hub where motivation, arousal, and sleep homeostasis converge, mediated by D1- and D2-MSN activity. This review examines its organization and circuits, emphasizing roles in vigilance, valence, and associative learning, and exploring emerging hypotheses on its contribution to sleep-related cognition and disorders.</p>","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":"2 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12912427/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"npj Biological Timing and Sleep","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1038/s44323-025-00059-9","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Traditionally linked to motor control and motivation, the basal ganglia, particularly the nucleus accumbens (NAc), are now recognized as central to sleep-wake regulation. Rodent studies highlight the NAc as a hub where motivation, arousal, and sleep homeostasis converge, mediated by D1- and D2-MSN activity. This review examines its organization and circuits, emphasizing roles in vigilance, valence, and associative learning, and exploring emerging hypotheses on its contribution to sleep-related cognition and disorders.