Double disconnection effects resulting from infiltrating tumors Journal Article
| Authors: | Sidtis, J. J.; Sadler, A. E.; Nass, R. D. |
| Article Title: | Double disconnection effects resulting from infiltrating tumors |
| Abstract: | Patients with left hemisphere lesions deep in parietal or parietal-occipital regions close to the lateral ventricles have been reported to have impaired performance on left ear speech stimuli in dichotic listening tests. This loss has been termed "paradoxical" because it presents at the ear ipsilateral to the lesion. Two patients with infiltrating tumors which involved the corpus callosum demonstrated that effect, but also demonstrated right ear extinction on a complex-pitch discrimination test that required right hemisphere processing. Since the side at which the impairment will be demonstrated depends upon the type of test used, the term "paradoxical extinction" does not clearly describe this phenomena. It is suggested that the so-called paradoxical loss is better referred to as callosal extinction. © 1989. |
| Keywords: | adolescent; child; case report; brain tumor; tomography, x-ray computed; neuropsychological tests; attention; astrocytoma; speech; parietal lobe; corpus callosum; dominance, cerebral; speech perception; listening; human; male; priority journal; article; support, u.s. gov't, p.h.s.; brain damage, chronic; pitch discrimination |
| Journal Title: | Neuropsychologia |
| Volume: | 27 |
| Issue: | 11-12 |
| ISSN: | 0028-3932 |
| Publisher: | Elsevier Inc. |
| Date Published: | 1989-01-01 |
| Start Page: | 1415 |
| End Page: | 1420 |
| Language: | English |
| DOI: | 10.1016/0028-3932(89)90134-6 |
| PUBMED: | 2615940 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | Article -- Export Date: 14 April 2020 -- Source: Scopus |
