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Titolo:
HUMAN PUPILLARY LIGHT REFLEX DURING AND AFTER 2-FOLD VALSALVA MANEUVER
Autore:
GAVRIYSKY VS;
Indirizzi:
NATL SPORTS ACAD,DEPT BIOCHEM & PHYSIOL,1 GURGULYAT ST SOFIA BULGARIA
Titolo Testata:
Journal of the autonomic nervous system
fascicolo: 3, volume: 54, anno: 1995,
pagine: 247 - 252
SICI:
0165-1838(1995)54:3<247:HPLRDA>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN PUPILLOGRAM; DIABETIC-PATIENTS; HYPERVENTILATION; PUPILLOMETRY; STIMULATION; DYSFUNCTION; VOLUNTEERS; HEART;
Keywords:
PUPILLARY LIGHT REFLEX; VALSALVA MANEUVER; PUPILLOGRAM; AUTONOMIC REGULATION; SYMPATHETIC ACTIVITY; PARASYMPATHETIC ACTIVITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
V.S. Gavriysky, "HUMAN PUPILLARY LIGHT REFLEX DURING AND AFTER 2-FOLD VALSALVA MANEUVER", Journal of the autonomic nervous system, 54(3), 1995, pp. 247-252

Abstract

The influence of the Valsalva maneuver on the pupillary light reflex and on the parameters of human pupillogram were studied in 9 normal volunteers (mean age 21.0 years). The consensual pupillary reactions to light were recorded using a infrared-reflecting pupillograph; pupillogram records were processed off-line by a computer system. Latency timeincreased during the Valsalva maneuver and normalized in the first minute after its end. No significant changes were found in constriction time. Half-redilatation time showed the opposite dynamics of latency time. The amplitude diminished during Valsalva maneuver and in the first minute after it. These results suggest a possible alteration of the autonomic nervous regulation during Valsalva maneuver and especially some changes in parasympathetic outflow to human iris sphincter. The possible effect of prevailing parasympathetic or sympathetic activity onpupillometry parameters during some phases of the Valsalva maneuver and after its end is discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 11:02:36