Sleep patterns in villagers and urban African volunteers in a humid tropical climate: Influence of accessibility to electric light?
J Neurol Sci
; 376: 44-48, 2017 May 15.
Article
en En
| MEDLINE
| ID: mdl-28431626
ABSTRACT
Recent publications focusing on sleep-wake alternation, using actigraphic recordings in hunter-gatherers, stressed the existence of a potential effect of electricity availability on sleep habits. These reports prompted us to achieve a new analysis of the polysomnographic data already obtained in healthy African volunteers in equatorial Africa during two different investigations. Comparison of the 24-h polysomnographic sleep patterns were done between 9 volunteers sleeping in a laboratory in Abidjan (Abidjan cohort) and 11 villagers living in electricity-free bush villages (Sinfra cohort). Sleep was lighter in the villagers, with more stage 1 and less slow wave sleep (SWS). Latency to SWS was also shorter. Total sleep time, however, was not different between the two groups. There were no indications as to whether the observed differences were attributable to the availability of electrical power. Reactivity of human sleep structure to the environment was discussed in terms of multifactorial influences such as daylight length, temperature, humidity, electromagnetic field, time of sleep onset, thermoregulatory mechanisms, stress or anxiety.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Sueño
/
Clima Tropical
/
Iluminación
/
Humedad
Tipo de estudio:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
Límite:
Adult
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
Africa
Idioma:
En
Revista:
J Neurol Sci
Año:
2017
Tipo del documento:
Article