Longitudinal dichotic listening patterns for aphasic patients : II. Relationship with lesion variables |
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Authors: | Nancy Niccum Charles Speaks Alan B Rubens David S Knopman Douglas Yock David Larson |
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Abstract: | Dichotic listening scores and information on lesion size and location were obtained for aphasic patients. All patients had a reduction in dichotic scores at 1 month postonset of symptoms, but some patients returned to normal levels of performance by 6 months postonset. Lesion location was the main determinant of patterns of performance. Right ear scores from the dichotic digit test closely reflected the presence or absence of lesions involving Heschl's gyrus. What appeared to be an effect of lesion volume was confounded by the relationship between increasing lesion volume and a greater likelihood of damage to Heschl's gyrus. |
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