Crowding, grouping, and gain control in schizophrenia
| Autor: | Andreas Brand, Maya Roinishvili, Céline Cappe, Albulena Shaqiri, Michael H. Herzog, Linda Rürup, Eka Chkonia |
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| Přispěvatelé: | Laboratory of Psychophysics (LPSY), Ecole Polytechnique Fédérale de Lausanne (EPFL), Centre de recherche cerveau et cognition (CERCO), Institut des sciences du cerveau de Toulouse. (ISCT), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Předmět: |
Adult
Male Schizophrenia (object-oriented programming) media_common.quotation_subject Gain control Developmental psychology 03 medical and health sciences 0302 clinical medicine Perception Grouping Humans Contextual modulation Biological Psychiatry media_common [SCCO.NEUR]Cognitive science/Neuroscience Middle Aged Crowding 030227 psychiatry Psychiatry and Mental health Pattern Recognition Visual Space Perception Facilitation Schizophrenia Female Psychology 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Psychiatry Research Psychiatry Research, 2015, 226 (2-3), pp.441--445. ⟨10.1016/j.psychres.2015.01.009⟩ |
| DOI: | 10.1016/j.psychres.2015.01.009⟩ |
| Popis: | Visual paradigms are versatile tools to investigate the pathophysiology of schizophrenia. Contextual modulation refers to a class of paradigms where a target is flanked by neighbouring elements, which either deteriorate or facilitate target perception. It is often proposed that contextual modulation is weakened in schizophrenia compared to controls, with facilitating contexts being less facilitating and deteriorating contexts being less deteriorating. However, results are mixed. In addition, facilitating and deteriorating effects are usually determined in different paradigms, making comparisons difficult. Here, we used a crowding paradigm in which both facilitation and deterioration effects can be determined all together. We found a main effect of group, i.e., patients performed worse in all conditions compared to controls. However, when we discounted for this main effect, facilitation and deterioration were well comparable to controls. Our results indicate that contextual modulation can be intact in schizophrenia patients. |
| Databáze: | OpenAIRE |
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