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
N1 - Funding Information:
I thank my collaborators of the infants’ brain activity study: Jiale Yang, So Kanazawa, and Masami K Yamaguchi. Furthermore, I thank my collaborators of the Japanese color-lexicon project: Ryan Lange, Yumiko Muto, Rumi Tokunaga, Kazuho Fukuda, Keiji Uchikawa, Satoshi Shioiri, and especially Angela M. Brown and Delwin T. Lindsey for their suggestions, comments, and thoughtful help. The methods of all studies in this article were approved by the ethics committee of all relevant organizations, under the Declaration of Helsinki. These studies were financially supported by the JSPS Grant-in-aid for Scientific Research ‘Kakenhi’ #s JP24330205 , JP15H03460 , and JP18H04995 .
Funding Information:
I thank my collaborators of the infants’ brain activity study: Jiale Yang, So Kanazawa, and Masami K Yamaguchi. Furthermore, I thank my collaborators of the Japanese color-lexicon project: Ryan Lange, Yumiko Muto, Rumi Tokunaga, Kazuho Fukuda, Keiji Uchikawa, Satoshi Shioiri, and especially Angela M. Brown and Delwin T. Lindsey for their suggestions, comments, and thoughtful help. The methods of all studies in this article were approved by the ethics committee of all relevant organizations, under the Declaration of Helsinki. These studies were financially supported by the JSPS Grant-in-aid for Scientific Research ‘Kakenhi’ #s JP24330205, JP15H03460, and JP18H04995.
Publisher Copyright:
© 2019 The Author
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 -
