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Sound localization in hemispherectomized patients
| Content Provider | Semantic Scholar |
|---|---|
| Author | Poirier, Pierre Lassonde, Maryse Villemure, Jean-Guy Geoffroy, Guy Lepore, Franco |
| Copyright Year | 1994 |
| Abstract | In order to precisely evaluate the consequences of cortical damage on free-field sound localization in humans, the present study examined response accuracy to auditory targets in three hemispherectomized patients and IQ-matched controls. Listeners reported sound location by pointing with their dominant hand to the apparent sound location in an anechoic chamber. Two conditions were tested: (i) localization of a fixed-sound source and (ii) localization of the beginning and the end of a simulated moving stimulus. In both conditions, the responses of the patients were less accurate than those of the controls in the hemifield contralateral to their removed hemisphere. Moreover, the single-case analyses revealed that the performances obtained with fixed sources were generally more precise than those obtained with moving sources. This result is discussed in terms of a differential involvement of cortical and subcortical pathways in the processing of stationary and moving sounds. Finally, the age at surgery and the post-surgical interval were related with the magnitude of the deficits, suggesting the possible influences of functional reorganization and cerebral plasticity. |
| Starting Page | 541 |
| Ending Page | 553 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 8084413 |
| Journal | Medline |
| Volume Number | 32 |
| Alternate Webpage(s) | https://api.elsevier.com/content/article/pii/0028393294901430 |
| Alternate Webpage(s) | https://www.sciencedirect.com/science/article/pii/0028393294901430?dgcid=api_sd_search-api-endpoint |
| Alternate Webpage(s) | https://doi.org/10.1016/0028-3932%2894%2990143-0 |
| Journal | Neuropsychologia |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
