File(s) not publicly available

Interindividual differences in neurobehavioral performance in response to increasing homeostatic sleep presure

Neurobehavioral function deteriorates with increasing homeostatic sleep pressure during wakefulness. It has been claimed that some individuals exhibit a quicker rate of such deterioration than others, thus being more vulnerable than others to the detrimental impact of increasing homeostatic sleep pressure. Evidence supporting the claim, however, has been limited by methodological issues. To overcome these limitations, the current study used a 12-calendar-day, 28-h forced desynchrony (FD) protocol (sleep:wake period=1:2) to study individual differences in the rate of change in neurobehavioral performance with increasing homeostatic sleep pressure. Neurobehavioral performance was assessed with a psychomotor vigilance task and a serial addition subtraction task. A significant performance decline on both tasks was revealed within as short as 17 h of wakefulness. The rates of decline of individual performance trajectories were, however, not different from the group average rate. This suggests that individuals are not differentially vulnerable to the detrimental impact of increasing homeostatic sleep pressure.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

27

Issue

5

Start Page

922

End Page

933

Number of Pages

12

eISSN

1525-6073

ISSN

0742-0528

Location

United Kingdom

Publisher

Informa Healthcare

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Appleton Institute for Behavioural Sciences; Centre for Sleep Research; Robinson Institute;

Era Eligible

Yes

Journal

Chronobiology international : the journal of biological and medical rhythm research.