Object substitution masking and the object updating hypothesis


13-Jun-2017 14:23

Moreover, it did not appear that the patients’ deficit was due to issues in initial processing of the target because when using the same SOAs and using a single dot to indicate which target to identify, we found: (1) that there was no group difference in behavior; and (2) iconic decay of the target was not different between groups.

Therefore, the increased masking effects in schizophrenia patients appeared to be due to the presence of the mask and not other factors. Pubmed Abstract | Pubmed Full Text | Cross Ref Full Text Lamme, V.

object substitution masking and the object updating hypothesis-42

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Target visibility was manipulated by changing stimulus onset asynchrony (SOA) between the target and mask, such that performance decreased with increasing SOA. incorrect responses, an index of reentrant processing, was examined for SOAs 50 and 100 ms. Schizophrenia patients exhibit deficits on visual processing tasks, including visual backward masking, and these impairments are related to deficits in higher-level processes. In the current study we used electroencephalography techniques to examine successive stages and pathways of visual processing in a specialized masking paradigm, four-dot masking, which involves masking by object substitution. Pathways between early visual processing and functional outcome in schizophrenia. These reentrant processes have even been shown to feedback to very early neural areas such as the lateral geniculate nucleus (Sillito et al., 1994). Sensory-based and higher-order operations contribute to abnormal emotional prosody processing in schizophrenia: an electrophysiological investigation.