Spatial and non-spatial feature binding impairments in visual working memory in schizophrenia.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
Fersiynau electronig
Dogfennau
- Spatial and non-spatial feature binding impairments
Fersiwn derfynol wedi’i chyhoeddi, 2.13 MB, dogfen-PDF
Trwydded: CC BY-NC-ND Dangos trwydded
Dangosydd eitem ddigidol (DOI)
Working memory (WM) impairments are well recognized in schizophrenia patients (PSZ) and contribute to poor psycho-social outcomes in this population. Distinct neural networks underlay the ability to encode and recall visual and spatial information raising the possibility that profile of visual working memory performance may help pinpoint dysfunctional neural correlates in schizophrenia. This study assessed the resolution and associative aspects of visual working memory deficits in schizophrenia and whether these deficits arise during encoding or maintenance processes. A total of 60 participants (30 PSZ and 30 healthy controls) matched in age, gender and education assessed on a modified object in place (OiPT), a delayed non-match-to-sample (DNMST) and a delayed spatial estimation (DSET) task. Patients demonstrated lower accuracy than controls in binding visual features of the same object and recognizing novel objects as well as lower precision recalling the location of a memorized target. Moreover, response choice set size affected recognition accuracy more in PSZ than controls. However, delay duration affected spatial recall precisions, binding, and recognition accuracy equally in the two groups. Our results suggest that visual working memory (vWM) impairments in schizophrenia predominantly reflect spatial and non-spatial binding deficits, with largely preserved discrete feature information. Moreover, these impairments likely arise more during encoding than during maintenance. These binding deficits may reflect impaired effective neural functional connectivity observed in schizophrenia.
Allweddeiriau
Iaith wreiddiol | Saesneg |
---|---|
Rhif yr erthygl | 100281 |
Nifer y tudalennau | 7 |
Cyfnodolyn | Schizophrenia Research: Cognition |
Cyfrol | 32 |
Dyddiad ar-lein cynnar | 14 Chwef 2023 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - Meh 2023 |
Cyfanswm lawlrlwytho
Nid oes data ar gael