The effect of category learning on attentional feature selection: Selection negativity and N250 likely reflect different processes

Jonathan Folstein; Shamsi Monfared; Trevor Maravel

doi:10.1167/16.12.258

The effect of category learning on attentional feature selection: Selection negativity and N250 likely reflect different processes

Journal of Vision ◽

10.1167/16.12.258 ◽

2016 ◽

Vol 16 (12) ◽

pp. 258 ◽

Cited By ~ 2

Author(s):

Jonathan Folstein ◽

Shamsi Monfared ◽

Trevor Maravel

Keyword(s):

Feature Selection ◽

Category Learning ◽

Selection Negativity

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Extended categorization of conjunction object stimuli decreases the latency of attentional feature selection and recruits orthography-linked ERPs

10.1101/605360 ◽

2019 ◽

Author(s):

Jonathan R. Folstein ◽

Shamsi S. Monfared

Keyword(s):

Feature Selection ◽

Temporal Cortex ◽

Detection Task ◽

Perceptual Expertise ◽

Scalp Distribution ◽

Selection Negativity ◽

Neural Processes ◽

Ventral Temporal Cortex ◽

Target Detection Task

AbstractThe 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.

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