Subjective vertical and postural activity

Luyat, Marion; Ohlmann, Théophile; Barraud, Pierre-Alain

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1016/S0001-6918(96)00015-7

PMID :

9062064

Permalink :

http://hdl.handle.net/20.500.12210/74846

Title :

Subjective vertical and postural activity

Author(s) :

Luyat, Marion [Auteur]

3886|||Université Pierre Mendès France - Grenoble 2 [UPMF]
Ohlmann, Théophile [Auteur]
Barraud, Pierre-Alain [Auteur]

Journal title :

Acta Psychologica

Abbreviated title :

Acta Psychol (Amst)

Volume number :

Pages :

181-93

Publication date :

1997-02-01

ISSN :

0001-6918

English keyword(s) :

Humans
Posture
Space Perception
Supine Position
Vertical Dimension

HAL domain(s) :

Sciences du Vivant [q-bio]/Neurosciences [q-bio.NC]

English abstract : [en]

Three experiments were conducted to test the effect of postural information, resulting from the active control of balance, on the perception of the vertical. Subjects were required to adjust a luminous rod in two different ...
Show more >Three experiments were conducted to test the effect of postural information, resulting from the active control of balance, on the perception of the vertical. Subjects were required to adjust a luminous rod in two different visual contexts: in the dark or within a tilted visual frame. In these experiments, postural activity was manipulated by placing observers either in a situation of slight postural imbalance (Experiment 1) or in a situation of postural immobilization (Experiment 2). In both situations performance was compared with a control condition in which subjects were standing upright freely (Experiment 1) or sitting unconstrained (Experiment 2). Results showed no main effect of active posture or of immobilization on the visual perception of the vertical. In the third experiment, subjects were supine with their Z body axis perpendicular to the plane of the luminous rod. Thus, body orientation relative to gravity was modified and motor activity reduced. In this position, the physical vertical was perceived quite accurately in a dark environment. Moreover, in the titled frame condition, the supine body position clearly improved vertical judgements. These results are discussed in relation to the ecological theory of orientation.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

Autres travaux scientifiques

Submission date :

2022-06-10T19:36:48Z
2022-07-04T13:36:24Z
2023-09-29T10:49:17Z
2024-02-16T09:51:10Z

Version history

Version	Link	Modification date
4	20.500.12210/74846*	2024-02-16T09:50:53Z
3	20.500.12210/74846.3	2023-09-29T10:48:26Z
2	20.500.12210/74846.2	2022-07-04T13:32:53Z
1	20.500.12210/74846.1	2022-06-10T19:36:48Z

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