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Neurosci Lett. 2014 Mar 20;563:28-32. doi: 10.1016/j.neulet.2014.01.026. Epub 2014 Jan 28.

Association between gray matter volume in the caudate nucleus and financial extravagance: findings from voxel-based morphometry.

Author information

1
Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan. Electronic address: ryoriichi@gmail.com.
2
Smart Ageing International Research Center, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan.
3
Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan.
4
Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Division of Medical Neuroimaging Analysis, Department of Community Medical Supports, Tohoku Medical Megabank Organization, Tohoku University, Seiryo-machi 2-1, Aoba-ku, Sendai 980-8573, Japan; Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan.
5
Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Division of Medical Neuroimaging Analysis, Department of Community Medical Supports, Tohoku Medical Megabank Organization, Tohoku University, Seiryo-machi 2-1, Aoba-ku, Sendai 980-8573, Japan.
6
Human and Social Response Research Division, International Research Institute of Disaster Science, Tohoku University, Aoba 6-6-4, Aoba, Sendai 980-8579, Japan.
7
Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan.
8
Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Graduate Schools for Law and Politics, The University of Tokyo, Hongo Bunkyo-ku 7-3-1, Tokyo 113-0033, Japan.
9
Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Department of Psychiatry, Tohoku University Graduate School of Medicine, Seiryo-machi 2-1, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
10
Faculty of Medicine, Tohoku University, Seiryo-machi 2-1, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
11
Department of Functional Brain Imaging, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Smart Ageing International Research Center, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan; Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai 980-8575, Japan.

Abstract

Consumer behavior differs among individuals; one such common individual difference is financial extravagance. Recent research suggests that the activation of the caudate nucleus plays an important role in consumer behavior. However, to the best of our knowledge, no study has investigated the specific relationship between the caudate nucleus and consumer financial extravagance. Therefore, in this study, we investigated the association between individual differences in financial extravagance and regional gray matter volume in the caudate nucleus by using voxel-based morphometry (VBM). We recruited 776 healthy, right-handed individuals (432 men and 344 women; mean age=20.7 ± 1.8) and used voxel-based morphometry and a financial extravagance questionnaire to determine the association between financial extravagance and gray matter structure in the caudate nucleus. Our measure of financial extravagance was based on the novelty seeking subscales of the Japanese version of the Temperament and Character Inventory. A multiple regression analysis including financial extravagance, age, sex, Raven's Advanced Progressive Matrix score, total intracranial volume, and novelty seeking subscales was conducted to examine what variables were related to regional gray matter volume in the region of interest within the caudate nucleus. A significant positive correlation was found between the obtained financial extravagance score and regional gray matter volume in the caudate nucleus. We found that structural variations in the caudate nucleus contributed to individual differences in financial extravagance. This finding may provide a new neuroscientific approach to understanding individual characteristics of consumers.

KEYWORDS:

Caudate nucleus; Financial extravagance; Gray matter structure; Voxel-based morphometry

PMID:
24486253
DOI:
10.1016/j.neulet.2014.01.026
[Indexed for MEDLINE]
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