TY - JOUR
T1 - Different neural systems for recognizing plants, animals, and artifacts
AU - Kawashima, Ryuta
AU - Hatano, Giyoo
AU - Oizumi, Kyoko
AU - Sugiura, Motoaki
AU - Fukuda, Hiroshi
AU - Itoh, Kengo
AU - Kato, Takashi
AU - Nakamura, Akinori
AU - Hatano, Kentaro
AU - Kojima, Shozo
N1 - Funding Information:
This study was supported in part by JSPS-RFTF (97L00202) to RyutaKawashima and Grant-in-Aid for Scientific Research on Priority Areas to Giyoo Hatano (No. 09207105). The authors would like to thank Itaru Tatsumi at the Tokyo Metropolitan Institute for Gerontology and Satoshi Umeda at Keio University for their helpful suggestions.
PY - 2001
Y1 - 2001
N2 - The purpose of this study was to investigate functional organization in the human brain involved in the representation of knowledge regarding plants. We measured the brain activity of eight male volunteers during the recognition of visual stimuli representing plants, animals and artifacts, using positron emission tomography. The participants were presented with and were required to name silently two different images each of 15 entities belonging to three ontological categories, and 30 series of four to six digits. Marked increases in regional cerebral blood flow were found in the hippocampus and the parahippocampal areas bilaterally and the right lateral occipital cortex during the silent naming of all three categories, compared with that during the silent reading of digits. The right lateral occipital cortex was specifically activated in association with the naming of plants, and the right fusiform cortex was specifically activated in association with the naming of animals. In addition, the right temporo-occipital cortex was activated only during animals and plants, not artifacts. Our results indicate that there were a few characteristic activations for the different categories, and that entities belonging to the different categories are not necessarily represented in different locations of the brain.
AB - The purpose of this study was to investigate functional organization in the human brain involved in the representation of knowledge regarding plants. We measured the brain activity of eight male volunteers during the recognition of visual stimuli representing plants, animals and artifacts, using positron emission tomography. The participants were presented with and were required to name silently two different images each of 15 entities belonging to three ontological categories, and 30 series of four to six digits. Marked increases in regional cerebral blood flow were found in the hippocampus and the parahippocampal areas bilaterally and the right lateral occipital cortex during the silent naming of all three categories, compared with that during the silent reading of digits. The right lateral occipital cortex was specifically activated in association with the naming of plants, and the right fusiform cortex was specifically activated in association with the naming of animals. In addition, the right temporo-occipital cortex was activated only during animals and plants, not artifacts. Our results indicate that there were a few characteristic activations for the different categories, and that entities belonging to the different categories are not necessarily represented in different locations of the brain.
KW - Occipital cortex
KW - PET
KW - Plants
KW - Silent naming
UR - http://www.scopus.com/inward/record.url?scp=0035056811&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035056811&partnerID=8YFLogxK
U2 - 10.1016/S0361-9230(00)00440-8
DO - 10.1016/S0361-9230(00)00440-8
M3 - Article
C2 - 11287136
AN - SCOPUS:0035056811
VL - 54
SP - 313
EP - 317
JO - Journal of Electrophysiological Techniques
JF - Journal of Electrophysiological Techniques
SN - 0361-9230
IS - 3
ER -