F-2-19-01
ENVIRONMENTAL SOUND AGNOSIA
Hirotaka Tanaka(Tokyo Rosai Hospital, Tokyo, Japan), Yasufumi Tanaka(Jichi Medical School, Tochigi, Japan), Kenji Hachisuka, Hajime Ogata (UOEH, Fukuoka, Japan), Hiroko Kayahara, Naoko Abou (Tokyo Rosai Hospital, Tokyo, Japan)
Purpose: To examine whether stroke patients are able to recognize familiar environmental sounds.
Method: Subjects were 26 stroke patients without hearing disturbance, whose lesion was confined in the cerebral hemisphere on one side. All patients had an infarction or hemorrhage involving cortical, subcortical or both areas and were evaluated in the chronic stage of the stroke. Eighteen and 8 patients had a lesion in the left and right cerebral hemisphere, respectively. All patients underwent Mini-Mental State examination, Token test, Albert's line cancellation test, and pure tone audiometry. Environmental sound recognition was tested as follows: while the patients listened to a sequence of 20 tape-recorded sounds, they were asked to select a correct picture of the sound source out of each 4 pictures consisting the correct sound source, acoustic foil, semantic foil and unrelated foil. Each correct answer was given one point.
Result: Impairments of environmental sound were observed in 7 patients with left hemispheric lesions and in 1 patient with right. The lesions were located on the temporal lobe or deep subcortical areas underlying the primary auditory area.
Conclusion: Environmental sound agnosia is observed in patients with damage limited to deep auditory pathways as well as cortical lesions.
F-2-19-02
SEQUENTIAL VISUOSPATIAL LEARNING IN IDEOMOTOR APRAXIA
Naoyasu Motomura (Department of Health Science, Osaka University of Education, Osaka, Japan)
Abstract: Sequential visuospatial learning ability in patients with ideomotor apraxia (IMA) was investigated, using as subjects, eight patients with IMA, 8 with aphasia without IMA and 8 normal controls. The aphasia, apraxia and normal control group were matched for age, sex and education. The sequential visuospatial test was performed and the learning effect in terms of decreases in total time, the number of errors and the error time was examined. There was not statistical difference between the learning effect of the apraxle group and that of the aphasic group. However, there were group differences in each trials in the number of errors and the error time. These results suggest that patients with IMA have some difficulties in motor performance rather than sequential visuo-spatial learning disturbance.
