ERP signatures of conscious and unconscious word and letter perception in an inattentional blindness paradigm
| Autor: | Kathryn Schelonka, Enriqueta Canseco-Gonzalez, Christian Graulty, Michael A. Pitts |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Unconscious mind Adolescent Consciousness Conscious perception Brain activity and meditation media_common.quotation_subject Experimental and Cognitive Psychology 050105 experimental psychology Task (project management) Young Adult 03 medical and health sciences 0302 clinical medicine Arts and Humanities (miscellaneous) Perception P3b Developmental and Educational Psychology Humans Attention 0501 psychology and cognitive sciences Inattentional blindness Evoked Potentials media_common Psycholinguistics Unconscious Psychology 05 social sciences Electroencephalography Awareness Visual awareness Pattern Recognition Visual Reading Female Psychology Psychomotor Performance 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Consciousness and Cognition. 54:56-71 |
| ISSN: | 1053-8100 |
| DOI: | 10.1016/j.concog.2017.04.009 |
| Popis: | A three-phase inattentional blindness paradigm was combined with ERPs. While participants performed a distracter task, line segments in the background formed words or consonant-strings. Nearly half of the participants failed to notice these word-forms and were deemed inattentionally blind. All participants noticed the word-forms in phase 2 of the experiment while they performed the same distracter task. In the final phase, participants performed a task on the word-forms. In all phases, including during inattentional blindness, word-forms elicited distinct ERPs during early latencies (∼200-280ms) suggesting unconscious orthographic processing. A subsequent ERP (∼320-380ms) similar to the visual awareness negativity appeared only when subjects were aware of the word-forms, regardless of the task. Finally, word-forms elicited a P3b (∼400-550ms) only when these stimuli were task-relevant. These results are consistent with previous inattentional blindness studies and help distinguish brain activity associated with pre- and post-perceptual processing from correlates of conscious perception. |
| Databáze: | OpenAIRE |
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