SLEEP 2011 Abstract Supplement

A. Basic Science XI. Sleep Deprivation
testing under conditions of a low stressor (easy tasks completed without
time pressure) and then by a high stressor (difficult tasks completed with
time pressure). Visual analog scales of stress were completed before
and after each testing session. On the second night of the study, subjects
were randomized to receive either total sleep deprivation (0h TIB,
N=12) or sleep (9h TIB, N=14), and the next day they again completed
testing under the same stressor conditions as the baseline day, but were
also exposed to a novel stressor (i.e., Trier Social Stress Test). Salivary
cortisol was assessed 20 min and 5 min before stressor onset (baseline
measures) and 5 min, 20 min and 40 min after stressor completion (reactivity
measures).
Results: Relative to no sleep deprivation, sleep deprivation was associated
with greater self-reported stress before both the low stress
(p