ANALYSIS OF HEAD AND EYE COORDINATION IN PATIENTS WITH ALZHEIMERS-DISEASE

Citation
M. Yamada et al., ANALYSIS OF HEAD AND EYE COORDINATION IN PATIENTS WITH ALZHEIMERS-DISEASE, IEICE transactions on information and systems, E77D(6), 1994, pp. 705-717
Citations number
NO
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Computer Science Information Systems
ISSN journal
0916-8532
Volume
E77D
Issue
6
Year of publication
1994
Pages
705 - 717
Database
ISI
SICI code
0916-8532(1994)E77D:6<705:AOHAEC>2.0.ZU;2-K
Abstract
With the advent of an aging society, the incidence of Alzheimer-type d ementia (hereinafter referred to as AD for convenience) has drasticall y increased. Compared with classic cerebrovascular dementia, AD requir es different therapeutic modalities. Despite such differences, it is d ifficult to establish a differential diagnosis of AD and cerebrovascul ar dementia. In the present paper, we analyze the neuropsychological s ymptoms and signs associated with AD, such as visual cognitive dysfunc tion, with particular attention to head and eye coordination. The subj ects were allowed to gaze at targets disposed 1 m away and at a visual angle of +/-25-degrees and 50-degrees in order to compare healthy vol unteers and patients with senile dementias such as multi-infarct demen tia (MID). As a consequence, patients with AD presented clinical manif estations not seen in patients with other senile dementias; that is, ( 1) an increase in stepwise eye movement, (2) anisotropy in the velocit y of right-directional and left-directional eye movements, (3) a decre ase in the velocity of head movements (4) incomplete gaze, and (5) dec reased head share.