Sleep-dependent motor memory consolidation in older adults depends on task demands

NEUROBIOLOGY OF AGING

卷:36

Article

Gudberg, Christel¹  Wulff, Katharina²  Johansen-Berg, Heidi¹ 

[1] Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford Ctr Funct MRI Brain FMRIB, Oxford OX3 9DU, England

[2] Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Nuffield Lab Ophthalmol, Oxford OX3 9DU, England

关键词: Sleep;    Motor memory;    Consolidation;    Aging;    Fine motor skill;    Sequence learning;   

DOI  :  10.1016/j.neurobiolaging.2014.12.014

来源: Elsevier

【 摘 要 】

It is often suggested that sleep-dependent consolidation of motor learning is impaired in older adults. The current study challenges this view and suggests that the degree of motor consolidation seen with sleep in older age groups depends on the kinematic demands of the task. We show that, when tested with a classic sequence learning task, requiring individuated finger movements, older adults did not show sleep-dependent consolidation. By contrast, when tested with an adapted sequence learning task, in which movements were performed with the whole hand, sleep-dependent motor improvement was observed in older adults. We suggest that age-related decline in fine motor dexterity may in part be responsible for the previously described deficit in sleep-dependent motor consolidation with aging. (C) 2015 The Authors. Published by Elsevier Inc.

【 授权许可】

Free