Effects of Daytime Sleep Inertia on the Recognition of Barely Distinguishable Sounds

Autor: Yu. V. Ukraintseva, K.M. Liaukovich, Olga Martynova, M. O. Shilov
Rok vydání: 2021
Předmět:
Zdroj: Neuroscience and Behavioral Physiology. 51:938-946
ISSN: 1573-899X
0097-0549
DOI: 10.1007/s11055-021-01150-x
Popis: Sleep inertia is the transitional state from sleep to waking and is characterized by decreased attention and productivity, along with disorientation. After waking, this state can last from a few minutes to several hours. Despite a quite long history of research into this phenomenon, there are still no studies assessing its effects on sensory recognition. We report here studies of the effects of daytime sleep inertia on the recognition of barely distinguishable sounds and our evaluation of its influence on event-related brain potentials in response to recognized sounds. A total of 45 healthy volunteers discriminated similar sounds before and after 1-h daytime naps. We found that shallow daytime sleep improved sound recognition. Sleep inertia was produced not so much by deep sleep (third stage) per se as waking from it – volunteers woken during stage three of daytime sleep recognized sounds worse than before sleep. This degradation was accompanied by increases in the latencies of the late cognitive components P3a and P3b and decreases in the amplitude of P3b. The latencies of the early components did not change, and there was even an increase in the amplitude of component P1 after sleep. These results lead to the conclusion that sleep inertia has no negative influence on the early stages of signal analysis, which evaluate the sensory characteristics of stimuli, but impaired the late stages, which are linked with decision-taking and formation of responses to stimuli.
Databáze: OpenAIRE
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