Differential Sensitivity for House Pictographs and Chinese Logographs in the “Parahippocampal Place Area
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..
Parahippocampal Place Area(PPA) functional Magnetic Resonance Imaging(fMRI) House Pictograph Chinese Logograph
Geqi Qi Bin Wang Satoshi Takahashi Seiichiro Ohno Susumu Kanazawa Jinglong Wu
The Graduate School of Natural Science and Technology Tsushima Campus, Okayama University, 3-1-1 Tsu Department of Radiology, Okayama University Hospital Shikata Campus, Okayama University, 2-1-5Shikat The Graduate School of Medicine, Dentistry, Pharmaceutical Science Shikata Campus, Okayama Universit
国际会议
2013 ICME International Conference on Complex Medical Engineering(2013 ICME复合医学工程国际会议)
北京
英文
444-447
2013-05-25（万方平台首次上网日期，不代表论文的发表时间）