A single night of sleep restriction impairs decision-making speed but not accuracy

BELLONE GIANNINA; PLANO SANTIAGO ANDRÉS; TORTELLO CAMILA; GUIDO SIMONELLI; DIEGO GOLOMBEK; VIGO DANIEL

Simposio; XIV Latin American Symposium on Chronobiology; 2017

The Centro Interdisciplinario de Neurociencia de Valparaíso (CINV)

Introduction: Numerous reports show that sleep deprivation impairs neurocognitive performance (executive functioning, sustained attention, and long-term memory). To our knowledge, it has not been fully studied the extent to which a single sleep restriction period can impair executive functions such as decision making. A single sleep restriction period (4h of time in bed) provides a more ecologically valid paradigm that closely resembles sleep patterns in our daily lives. Objective: To compare decision-making between sleep restricted and non-restricted subjects and to correlate decision-making outcomes with fatigue symptoms. Methods: Two experimental groups (restricted, n=10 and non-restricted, n=15) were studied. We administered a computerized decision making test (Monterde-i-Bort?s TID), that assessed number of attempts (NA), number of successes (NS), success rate (SR), risk assumption (RA) and response time (RT), and a fatigue symptom survey. We used T-test to assess between group differences and Pearson?s correlation tests to explore potential correlations between fatigue symptoms and decision-making outcomes. Results: Sleep restricted individuals were slower compared to non-restricted ones (restricted: 1.18±0.13s, non-restricted: 0.71±0.03s, p