Compensatory Mechanism and Circadian Preference Related Frontal Cortex Activation in Adolescent: The Relationship to Sleep Pattern and Testing Time
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1
Carleton University, Department of Psychology, Canada
Does cognitive performance of adolescence depended on the static circadian preferences as shown in previous research? To examine the effect of sleep pattern of adolescent and time of testing on cognitive functioning, event-related potentials (ERPs) were recorded while 22 female (age 16-18) completed standard version of Stroop Colour-Word task. Participants were randomly assigned to two groups, Morning or Afternoon. Each group completed two identical tests, one on Monday and one on Wednesday, in the time slot which they were assigned to. Participants reported consistent sleeping hour throughout the week with delayed sleeping schedule on weekend. ERP data showed interaction and main effects of Day and Time for the early Stroop interference (N450) and the late Stroop interference (SP). However, no significance differences were found for the behavioural data. Low N450 activation on Monday (morning and afternoon) and high activation observed only on Wednesday afternoon was explained through neural activation due to both circadian rhythm and sleep pattern adaptation. Different SP activation patterns were found at F3 and F4 showing lateral differences in frontal areas. Furthermore, we hypothesize that the activation pattern at F4 reflected the activation of compensatory mechanism, which resulted in similar behavioural performance levels.
Conference:
The 20th Annual Rotman Research Institute Conference, The frontal lobes, Toronto, Canada, 22 Mar - 26 Mar, 2010.
Presentation Type:
Poster Presentation
Topic:
Cognitive Neuroscience
Citation:
D'Angiulli
A and
Yeh
W
(2010). Compensatory Mechanism and Circadian Preference Related Frontal Cortex Activation in Adolescent: The Relationship to Sleep Pattern and Testing Time.
Conference Abstract:
The 20th Annual Rotman Research Institute Conference, The frontal lobes.
doi: 10.3389/conf.fnins.2010.14.00121
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Received:
30 Jun 2010;
Published Online:
30 Jun 2010.
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Correspondence:
W-H Yeh, Carleton University, Department of Psychology, Ottawa, Canada, whyeh@connect.carleton.ca