TY - JOUR
T1 - Ventriloquist Effect Reinstates Responsiveness to Auditory Stimuli in the ‘Ignored’ Space in Patients with Hemispatial Neglect*
AU - Soroker, Nachum
AU - Calamaro, Nir
AU - Myslobodskv, Michael S.
N1 - Funding Information:
USN is more often attributed to right parietal damage, with visual neglect as the major feature of the disorder (Brain, 1941; De Renzi, 1982). Yet, such patients may also manifest tactile extinction (De Renzi, Faglioni, & Scotti, 1970; Schwartz, Marchok, Kreinick, & Flynn, 1979), increased vibrotactile reaction times (Pierson-Savage, Bradshaw, Bradshaw, & Nettleton, * This work was supported by The Israel Academy of Sciences grant to MSM. We thank C. Serfaty, M.D. for her unfailing aid in neuropsychological and neurological testing of some of these patients, Dr. J.Glicksohn for advice in statistical processing, and S.Sher for help in technical execution of the project. Correspondence to Michael S. Myslobodsky, M.D., D.Sc., Psychobiology Research Unit, Tel-Aviv University, Ramat Aviv 69978, Israel. Accepted for publication: August 1, 1994.
PY - 1995/4/1
Y1 - 1995/4/1
N2 - We examined 6 patients with robust visual neglect following right hemisphere damage. All of them had signs of auditory neglect as documented by the inferior identification of syllables delivered through a loudspeaker on the left side. When the same stimuli on the left were administered in the presence of a fictitious source of sound (a dummy loudspeaker) visible in the homolesional space, a significant increase in the identification score of sounds was obtained (the “ventriloquist” effect). The result is in keeping with a notion of a strong coupling between auditory and visual systems. The effect is attributed to the activation by the fictitious source of sound of the audio-visual map in the left hemisphere. We draw attention to the possibility that loss of awareness of auditory input may arise due to the disconnection of the visual input from the audio-visual template.
AB - We examined 6 patients with robust visual neglect following right hemisphere damage. All of them had signs of auditory neglect as documented by the inferior identification of syllables delivered through a loudspeaker on the left side. When the same stimuli on the left were administered in the presence of a fictitious source of sound (a dummy loudspeaker) visible in the homolesional space, a significant increase in the identification score of sounds was obtained (the “ventriloquist” effect). The result is in keeping with a notion of a strong coupling between auditory and visual systems. The effect is attributed to the activation by the fictitious source of sound of the audio-visual map in the left hemisphere. We draw attention to the possibility that loss of awareness of auditory input may arise due to the disconnection of the visual input from the audio-visual template.
UR - http://www.scopus.com/inward/record.url?scp=0028908693&partnerID=8YFLogxK
U2 - 10.1080/01688639508405121
DO - 10.1080/01688639508405121
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C2 - 7629270
AN - SCOPUS:0028908693
SN - 1380-3395
VL - 17
SP - 243
EP - 255
JO - Journal of Clinical and Experimental Neuropsychology
JF - Journal of Clinical and Experimental Neuropsychology
IS - 2
ER -