Abstract：
:Previous research has suggested a time-of-day effect for response inhibition on a task known to be dependent on frontal lobe function. We used a forced desynchronisation protocol to separate effects of circadian and sleep homeostat processes on a modified version of this task. Fourteen healthy young adults followed an experimental day length of 28 hr for 18 consecutive "days". There was a significant main effect of wake duration but no circadian component for inhibitory performance on this task. An interaction suggested that performance coinciding with the rising arm of the circadian cycle will vary dependent on the length of prior wakefulness. We suggest that the relationship between homeostatic sleep processes and circadian processes is complex and that their effects on cognitive processes are not easily separated by routine sleep-deprivation or time-of-day studies.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Harrison Y,Jones K,Waterhouse Jdoi
10.1016/j.neuropsychologia.2006.12.012subject
Has Abstractpub_date
2007-04-09 00:00:00pages
1966-72issue
8eissn
0028-3932issn
1873-3514pii
S0028-3932(07)00003-6journal_volume
45pub_type
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