Idiothetic orientation and path integration in unilateral hippocampal atrophy and sclerosis.
J Vestib Res
; 10(6): 301-9, 2000.
Article
de En
| MEDLINE
| ID: mdl-11455111
ABSTRACT
We determined the effects of hippocampal lesions on idiothetic spatial orientation by exposing 14 patients with unilateral hippocampal atrophy and/or sclerosis (HAS) and 10 normal controls to random rotational displacements (+/-30 degrees -180 degrees ) in darkness and examined their ability to rotate themselves back to the initial position. In comparison to controls, the patients responses were distinctly hypometric (p<0.005). Patients with right hippocampal lesions showed a trend towards higher come back errors p = 0.08). Normal controls could maintain their accuracy over five consecutive trials. Patients, beginning with less accuracy, showed significant improvement after each trial (p<0.001). The findings suggest that unilateral HAS impair the immediate recall of idiothetic spatial information, but does not affect long-term spatial learning.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Orientation
/
Hippocampe
Limites:
Adult
/
Female
/
Humans
/
Male
Langue:
En
Journal:
J Vestib Res
Sujet du journal:
OTORRINOLARINGOLOGIA
Année:
2000
Type de document:
Article
Pays d'affiliation:
Autriche