Evidence for separate allocentric and egocentric space processing in neglect patients

Luigi Pizzamiglio, Cecilia Guariglia, Teresa Cosentino

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Spatial orientation was investigated in two different conditions: (a) when the shape of the enclosure was the only available information; (b) when a clearly perceivable visual cue was added. Three groups of subjects were investigated: normal controls, right brain-damaged patients without and with hemispatial neglect. The performance of the first two groups clearly demonstrated the capacity to use the geometric properties of the environment and to integrate this information with an additional visual cue. Considered as a group, patients with hemispatial neglect were able to use the shape of the environment and, to a lesser extent, the additional visual cue. However, individual differences suggest two opposite performance patterns: two patients responded randomly when the shape of the environment was the only available information, and they improved considerably when the cue was offered; two other patients showed normal competence in dealing with the geometrical properties of the environment, but were unable to take advantage of the cue. The different lesion site in these two types of patients suggests a possible dissociation of processing based upon allocentric or egocentric coding of space in humans as well as in animals.

Original languageEnglish
Pages (from-to)719-730
Number of pages12
JournalCortex
Volume34
Issue number5
Publication statusPublished - 1998

Fingerprint

Cues
Perceptual Disorders
Individuality
Mental Competency
Brain

Keywords

  • Environmental perception
  • Hemispatial neglect
  • Navigation
  • Spatial cognition

ASJC Scopus subject areas

  • Neuroscience(all)
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience

Cite this

Evidence for separate allocentric and egocentric space processing in neglect patients. / Pizzamiglio, Luigi; Guariglia, Cecilia; Cosentino, Teresa.

In: Cortex, Vol. 34, No. 5, 1998, p. 719-730.

Research output: Contribution to journalArticle

Pizzamiglio, L, Guariglia, C & Cosentino, T 1998, 'Evidence for separate allocentric and egocentric space processing in neglect patients', Cortex, vol. 34, no. 5, pp. 719-730.
Pizzamiglio, Luigi ; Guariglia, Cecilia ; Cosentino, Teresa. / Evidence for separate allocentric and egocentric space processing in neglect patients. In: Cortex. 1998 ; Vol. 34, No. 5. pp. 719-730.
@article{f955a3e5ce72457db35b6d110dc08c7a,
title = "Evidence for separate allocentric and egocentric space processing in neglect patients",
abstract = "Spatial orientation was investigated in two different conditions: (a) when the shape of the enclosure was the only available information; (b) when a clearly perceivable visual cue was added. Three groups of subjects were investigated: normal controls, right brain-damaged patients without and with hemispatial neglect. The performance of the first two groups clearly demonstrated the capacity to use the geometric properties of the environment and to integrate this information with an additional visual cue. Considered as a group, patients with hemispatial neglect were able to use the shape of the environment and, to a lesser extent, the additional visual cue. However, individual differences suggest two opposite performance patterns: two patients responded randomly when the shape of the environment was the only available information, and they improved considerably when the cue was offered; two other patients showed normal competence in dealing with the geometrical properties of the environment, but were unable to take advantage of the cue. The different lesion site in these two types of patients suggests a possible dissociation of processing based upon allocentric or egocentric coding of space in humans as well as in animals.",
keywords = "Environmental perception, Hemispatial neglect, Navigation, Spatial cognition",
author = "Luigi Pizzamiglio and Cecilia Guariglia and Teresa Cosentino",
year = "1998",
language = "English",
volume = "34",
pages = "719--730",
journal = "Cortex",
issn = "0010-9452",
publisher = "Masson SpA",
number = "5",

}

TY - JOUR

T1 - Evidence for separate allocentric and egocentric space processing in neglect patients

AU - Pizzamiglio, Luigi

AU - Guariglia, Cecilia

AU - Cosentino, Teresa

PY - 1998

Y1 - 1998

N2 - Spatial orientation was investigated in two different conditions: (a) when the shape of the enclosure was the only available information; (b) when a clearly perceivable visual cue was added. Three groups of subjects were investigated: normal controls, right brain-damaged patients without and with hemispatial neglect. The performance of the first two groups clearly demonstrated the capacity to use the geometric properties of the environment and to integrate this information with an additional visual cue. Considered as a group, patients with hemispatial neglect were able to use the shape of the environment and, to a lesser extent, the additional visual cue. However, individual differences suggest two opposite performance patterns: two patients responded randomly when the shape of the environment was the only available information, and they improved considerably when the cue was offered; two other patients showed normal competence in dealing with the geometrical properties of the environment, but were unable to take advantage of the cue. The different lesion site in these two types of patients suggests a possible dissociation of processing based upon allocentric or egocentric coding of space in humans as well as in animals.

AB - Spatial orientation was investigated in two different conditions: (a) when the shape of the enclosure was the only available information; (b) when a clearly perceivable visual cue was added. Three groups of subjects were investigated: normal controls, right brain-damaged patients without and with hemispatial neglect. The performance of the first two groups clearly demonstrated the capacity to use the geometric properties of the environment and to integrate this information with an additional visual cue. Considered as a group, patients with hemispatial neglect were able to use the shape of the environment and, to a lesser extent, the additional visual cue. However, individual differences suggest two opposite performance patterns: two patients responded randomly when the shape of the environment was the only available information, and they improved considerably when the cue was offered; two other patients showed normal competence in dealing with the geometrical properties of the environment, but were unable to take advantage of the cue. The different lesion site in these two types of patients suggests a possible dissociation of processing based upon allocentric or egocentric coding of space in humans as well as in animals.

KW - Environmental perception

KW - Hemispatial neglect

KW - Navigation

KW - Spatial cognition

UR - http://www.scopus.com/inward/record.url?scp=0032411712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032411712&partnerID=8YFLogxK

M3 - Article

C2 - 9872374

AN - SCOPUS:0032411712

VL - 34

SP - 719

EP - 730

JO - Cortex

JF - Cortex

SN - 0010-9452

IS - 5

ER -