Effects of Early and Late Nocturnal Sleep on Declarative and Procedural Memory

  title={Effects of Early and Late Nocturnal Sleep on Declarative and Procedural Memory},
  author={Werner Plihal and Jan Born},
  journal={Journal of Cognitive Neuroscience},
  • W. PlihalJ. Born
  • Published 1 July 1997
  • Psychology, Biology
  • Journal of Cognitive Neuroscience
Recall of paired-associate lists (declarative memory) and mirror-tracing skills (procedural memory) was assessed after retention intervals defined over early and late nocturnal sleep. In addition, effects of sleep on recall were compared with those of early and late retention intervals filled with wakefulness. Twenty healthy men served as subjects. Saliva cortisol concentrations were determined before and after the retention intervals to determine pituitary-adrenal secretory activity. Sleep was… 

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