Sleep Studies of Summer Members in Antarctica Cardiovascular Responses.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-704383166&userType=user&freeTextValue=Sleep+Studies+of+Summer+Members+in+Antarctica+%3A+Cardiovascular+Responses.

Brief Description (Abstract):

Six summer and four wintering members of Indian Antarctic expedition underwent heart rate (HR) and galvanic skin resistance (GSR) recordings during sleep. A total of three night recordings were performed on each subject at three different sessions during the period of four months of austral summer. As the subjects slept in the laboratory, they showed disturbance in sleep pattern. In all the subjects during summer, the sleep bradycardia increased with absence of periodic fluctuations of HR indicative of temporary loss of REM sleep. The subjects tended to show increase in slow wave sleep during summer. The winterover subjects showed disturbed sleep variables which was not related to HR and GSR changes during sleep. However, due to the limited number of subjects no affirmative answer could be made to prove relationship of sleep disturbance with prolonged daylight or psychological reaction with prolonged isolation.

Status: Completed

Purpose: Stable temporal organization of human physiology and psychology is achieved through synchronization of underlying circadian pacemakers to a 24 h period primarily by appropriate light - dark cycle. The polar region provides an excellent laboratory for studying the human circadian rhythms. There is evidence that Antarctic expedition members frequently complain of insomnia, and this has been linked to polar nights and homesickness (Bogolovaskii,1974 and Natani et al.,1970). The Antarctic sleep studies have been conducted by various workers like Bogolovaskii (1974), Gander et al.(1991) and Natani et al.(1970), particularly on subjects overwintering, indicating sleep disruption, suppression of delta sleep and diminution of paradoxical sleep during polar night by polysomnographic recordings (Joren et al.,1970 and Buguetetal.,1987).

Presentation Format: Documentdigital

Distribution Format: unknown

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Human Dimensions,

Place/Location(s): Maitri, Antarctic,

Project: Sleep Studies of Summer Members in Antarctica Cardiovascular Responses,

Topic Category(s): Health,

Date(s): 2020-09-15 (Creation),

Resource Contact(s):
1. Name : Dr. B Chhajer
    Role : PrincipalInvestigator
    Phone : 8322525515
    E-Mail : ictd [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Distributor Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : Distributor
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Metadata Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : PointOfContact
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Extent:
Start Date : 1991-01-01
End Date   : 1992-12-31