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Event‐related potentials reveal linguistic suppression effect but not enhancement effect on categorical perception of color
Author(s) -
Lu Aitao,
Yang Ling,
Yu Yanping,
Zhang Meichao,
Shao Yulan,
Zhang Honghong
Publication year - 2014
Publication title -
scandinavian journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 72
eISSN - 1467-9450
pISSN - 0036-5564
DOI - 10.1111/sjop.12122
Subject(s) - hue , categorical perception , psychology , categorical variable , color vision , perception , stimulus (psychology) , event related potential , cognitive psychology , communication , mathematics , artificial intelligence , computer science , cognition , statistics , neuroscience , speech perception
The present study used the event‐related potential technique to investigate the nature of linguistic effect on color perception. Four types of stimuli based on hue differences between a target color and a preceding color were used: zero hue step within‐category color (0‐ WC ); one hue step within‐category color (1‐ WC ); one hue step between‐category color (1‐ BC ); and two hue step between‐category color (2‐ BC ). The ERP results showed no significant effect of stimulus type in the 100‐200 ms time window. However, in the 200–350 ms time window, ERP responses to 1‐ WC target color overlapped with that to 0‐ WC target color for right visual field ( RVF ) but not left visual field ( LVF ) presentation. For the 1‐ BC condition, ERP amplitudes were comparable in the two visual fields, both being significantly different from the 0‐ WC condition. The 2‐ BC condition showed the same pattern as the 1‐ BC condition. These results suggest that the categorical perception of color in RVF is due to linguistic suppression on within‐category color discrimination but not between‐category color enhancement, and that the effect is independent of early perceptual processes.