TY - GEN
T1 - Differential sensitivity for house pictographs and Chinese logographs in the 'parahippocampal place area'
AU - Qi, Geqi
AU - Wang, Bin
AU - Takahashi, Satoshi
AU - Ohno, Seiichiro
AU - Kanazawa, Susumu
AU - Wu, Jinglong
PY - 2013
Y1 - 2013
N2 - The 'parahippocampal place area, PPA' within parahippocampal cortex is generally implicated in perceiving the local visual environment. This region responds selectively and automatically in functional magnetic resonance imaging (fMRI) to house images. Previous studies have indicated that the house-selective response in the PPA can be explained by selectivity for low-level features of the visual stimuli, such as geometric structure and high special frequency (SF). However, it remains unclear which of the two visual features of stimuli contributes more to the house-selective response in the PPA. To address this issue, we compared the PPA response to house pictographs and Chinese logographs with two different levels of white noise. fMRI was used to record the subjects' PPA activation during category discrimination task between house and word. As a result, the PPA showed significant main effect of category but not noise level. The results suggest that the PPA is more tuned to geometrical structure of visual stimuli than their high SF features.
AB - The 'parahippocampal place area, PPA' within parahippocampal cortex is generally implicated in perceiving the local visual environment. This region responds selectively and automatically in functional magnetic resonance imaging (fMRI) to house images. Previous studies have indicated that the house-selective response in the PPA can be explained by selectivity for low-level features of the visual stimuli, such as geometric structure and high special frequency (SF). However, it remains unclear which of the two visual features of stimuli contributes more to the house-selective response in the PPA. To address this issue, we compared the PPA response to house pictographs and Chinese logographs with two different levels of white noise. fMRI was used to record the subjects' PPA activation during category discrimination task between house and word. As a result, the PPA showed significant main effect of category but not noise level. The results suggest that the PPA is more tuned to geometrical structure of visual stimuli than their high SF features.
KW - Chinese Logograph
KW - House Pictograph
KW - Parahippocampal Place Area (PPA)
KW - functional Magnetic Resonance Imaging (fMRI)
UR - http://www.scopus.com/inward/record.url?scp=84881511984&partnerID=8YFLogxK
U2 - 10.1109/ICCME.2013.6548287
DO - 10.1109/ICCME.2013.6548287
M3 - Conference contribution
AN - SCOPUS:84881511984
SN - 9781467329699
T3 - 2013 ICME International Conference on Complex Medical Engineering, CME 2013
SP - 444
EP - 447
BT - 2013 ICME International Conference on Complex Medical Engineering, CME 2013
T2 - 2013 7th ICME International Conference on Complex Medical Engineering, CME 2013
Y2 - 25 May 2013 through 28 May 2013
ER -