SLEEP 2011 Abstract Supplement

A. Basic Science XI. Sleep Deprivation
Methods: Participants were 58 students (38 males, 20 females). During
a night of sleep deprivation, participants completed a variety of tasks
across four testing sessions (6:30-10:30pm, 11-3am, 3:30-7:30am and
8-12pm). Three Automated Neurological Assessment Matrixes tasks
were used: the Code Substitution Learning (CDL), Code Substitution
Immediate Recall (CDI), and Code Substitution Delayed Recall (CDD).
The CDL asked participants to learn a specific pairing of 9 symbols
to the numbers 1 through 9. The participants next completed the CDI
where they matched the symbol to the correct number. About five minutes
later, after completing two other short tasks, the participants completed
the CDD where they again matched the symbol and number. The
task took a total of 10 minutes to complete including the 5-minute delay.
Throughput (correct responses/reaction time) was used as a measure of
speed-accuracy tradeoff.
Results: A 4x3 ANOVA was completed to examine throughput across
the four testing sessions for each task (CDL, CDI, CDD). There was
a significant main effect for testing sessions (p