Extended categorization of conjunction object stimuli decreases the latency of attentional feature selection and recruits orthography-linked ERPs
| Autor: | Jonathan R. Folstein, Shamsi S. Monfared |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Cognitive Neuroscience media_common.quotation_subject Experimental and Cognitive Psychology Feature selection Electroencephalography Stimulus (physiology) Audiology 050105 experimental psychology 03 medical and health sciences Young Adult 0302 clinical medicine Perception Attentional modulation medicine Humans Learning 0501 psychology and cognitive sciences Attention Evoked Potentials media_common Temporal cortex Brain Mapping medicine.diagnostic_test 05 social sciences Magnetic Resonance Imaging Temporal Lobe Neuropsychology and Physiological Psychology medicine.anatomical_structure Pattern Recognition Visual Categorization Scalp Evoked Potentials Visual Female Psychology 030217 neurology & neurosurgery Photic Stimulation Psychomotor Performance Orthography Cognitive psychology |
| Popis: | The role of attention in driving perceptual expertise effects is controversial. The current study addressed the effect of training on ERP components related to and independent of attentional feature selection. Participants learned to categorize cartoon animals over six training sessions (8,800 trials) after which ERPs were recorded during a target detection task performed on trained and untrained stimulus sets. The onset of the selection negativity, an ERP component indexing attentional modulation, was about 60 ms earlier for trained than untrained stimuli. Trained stimuli also elicited centro-parietal N200 and N320 components that were insensitive to attentional feature selection. The scalp distribution and timecourse of these components were better matched by studies of orthography than object expertise. Source localization using eLORETA suggested that the strongest neural sources of the selection negativity were in right ventral temporal cortex whereas the strongest sources of the N200/N320 components were in left ventral temporal cortex, again consistent with the hypothesis that training recruited orthography related areas. Overall, training altered neural processes related to attentional selection, but also affected neural processes that were independent of feature selection. |
| Databáze: | OpenAIRE |
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