Subjective vertical and postural activity

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

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1016/S0001-6918(96)00015-7

PMID :

9062064

URL permanente :

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

Titre :

Subjective vertical and postural activity

Auteur(s) :

Luyat, Marion [Auteur]

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

Titre de la revue :

Acta Psychologica

Nom court de la revue :

Acta Psychol (Amst)

Numéro :

Pagination :

181-93

Date de publication :

1997-02-01

ISSN :

0001-6918

Mot(s)-clé(s) en anglais :

Humans
Posture
Space Perception
Supine Position
Vertical Dimension

Discipline(s) HAL :

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

Résumé en anglais : [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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

Autres travaux scientifiques

Date de dépôt :

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

Historique des modifications

Numéro de version	Lien	Date de modification
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

*Version sélectionnée

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