Semantic incongruity attracts attention at a pre-conscious level: Evidence from a TMS study
| Autor: | Javier Ortiz-Tudela, Juan Lupiáñez, Ana B. Chica, Elisa Martín-Arévalo |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Cognitive Neuroscience Experimental and Cognitive Psychology Context (language use) Functional Laterality 050105 experimental psychology Task (project management) Young Adult 03 medical and health sciences 0302 clinical medicine Humans Semantic memory Attention 0501 psychology and cognitive sciences Control (linguistics) Brain Mapping Communication business.industry 05 social sciences Transcranial Magnetic Stimulation Object (philosophy) Object detection Semantics Identification (information) Neuropsychology and Physiological Psychology Pattern Recognition Visual Female business Psychology 030217 neurology & neurosurgery Change detection Cognitive psychology |
| Zdroj: | Cortex. 102:96-106 |
| ISSN: | 0010-9452 |
| Popis: | Unpredicted objects, i.e., those that do not fit in a specific context, have been shown to quickly attract attention as a mean of extracting more information about potentially relevant items. Whether the required semantic processing triggering the attraction of attention can occur independently of participants' awareness of the object is still a highly debated topic. In the present study we make use of a change detection task in which we manipulate the semantic congruity between the to-be-detected object and the background scene. We applied inhibitory repetitive transcranial magnetic stimulation (rTMS) over the right temporo-parietal junction (right TPJ) and a control location (vertex) to test the causal role of the former in the processing of objects at a pre-conscious level. Our results clearly show that semantic congruity can impact detection and identification processes in opposite ways, even when low-level features are controlled for. Incongruent objects are quickly detected but poorly identified. rTMS over the right TPJ effectively diminishes semantic effects on object detection. These results suggest that at least some high order category processing takes place before conscious detection to direct attention towards the most informative regions of space. Moreover, rTMS over right TPJ also impacts object identification, which calls for a re-evaluation of right TPJ's role on object processing. |
| Databáze: | OpenAIRE |
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