TY - JOUR
T1 - Emergence and separation of color categories
T2 - an NIRS study in prelingual infants and a k-means analysis on Japanese color-naming data
AU - Kuriki, Ichiro
PY - 2019/12
Y1 - 2019/12
N2 - Two studies are introduced to discuss how color categories are established and separated. In the first study, the neural representations of color category in prelingual infants were studied with near-infrared spectroscopy (NIRS) technique. While the NIRS signals in the occipito-temporal area showed increased response to alternations of colors across categories but not for color changes within a category, no difference between these category conditions was observed in the occipital area. The second study demonstrated that the separation of basic color categories is an on-going event. The separation of color category from one blue category to two (light-blue and dark-blue) blue categories was tested, after the k-means clustering analysis was applied to the color-naming data of modern Japanese speakers. Surprisingly, it showed significant progress in the reduction of overlaps between the two blue categories, in comparison to a previous study on Japanese in 30 years ago. Together with other supporting evidences, including studies in non-human primates, the neural basis of the emergence and separation of color categories will be discussed.
AB - Two studies are introduced to discuss how color categories are established and separated. In the first study, the neural representations of color category in prelingual infants were studied with near-infrared spectroscopy (NIRS) technique. While the NIRS signals in the occipito-temporal area showed increased response to alternations of colors across categories but not for color changes within a category, no difference between these category conditions was observed in the occipital area. The second study demonstrated that the separation of basic color categories is an on-going event. The separation of color category from one blue category to two (light-blue and dark-blue) blue categories was tested, after the k-means clustering analysis was applied to the color-naming data of modern Japanese speakers. Surprisingly, it showed significant progress in the reduction of overlaps between the two blue categories, in comparison to a previous study on Japanese in 30 years ago. Together with other supporting evidences, including studies in non-human primates, the neural basis of the emergence and separation of color categories will be discussed.
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U2 - 10.1016/j.cobeha.2019.04.012
DO - 10.1016/j.cobeha.2019.04.012
M3 - Review article
AN - SCOPUS:85066615670
VL - 30
SP - 21
EP - 27
JO - Current Opinion in Behavioral Sciences
JF - Current Opinion in Behavioral Sciences
SN - 2352-1546
ER -