Effects of pattern shape on adaptation of dLGN cell  

作　　者：JINJianzhong XUPengjing LIXiangrui ZHOUYifeng 

机构地区：[1]VisionResearchLaboratory,SchoolofLifeSciences,UniversityofScienceandTechnologyofChina,Hefei230027,China [2]VisualInformationProcessingLaboratoryofInstituteofBiophysics,ChineseAcademyofSciences,Beijing100101,China

出　　处：《Chinese Science Bulletin》2003年第16期1744-1747,共4页

基　　金：supported by the National Natural Science Foundation of China(Grant No.30070257);the Foundation of the Chinese Academy of Sciences(Grant No.KGCX2-SW-101);Visual Information Processing Laboratory of Institute of Biophysics,the Chinese Academy of Sciences.

摘　　要：Pattern adaptation is one of the fundamental sensory processes in the visual system. In this study, we compared pattern adaptation induced by two types of sinu-soidal drifting grating in dLGN cells of cat. The two types of grating have the same parameters (e.g. spatial frequency, temporal frequency and contrast) except their pattern shapes, one of which is normal grating and the other annular grating. The results suggested that the annular grating elic-ited stronger response and stronger pattern adaptation than the normal grating. This is consistent with the adaptation and aftereffect to the two types of drifting gratings seen in psychology and may reflect the subcortical neural mecha-nism underlying these psychological phenomena.Pattern adaptation is one of the fundamental sensory processes in the visual system. In this study, we compared pattern adaptation induced by two types of sinu-soidal drifting grating in dLGN cells of cat. The two types of grating have the same parameters (e.g. spatial frequency, temporal frequency and contrast) except their pattern shapes, one of which is normal grating and the other annular grating. The results suggested that the annular grating elic-ited stronger response and stronger pattern adaptation than the normal grating. This is consistent with the adaptation and aftereffect to the two types of drifting gratings seen in psychology and may reflect the subcortical neural mecha-nism underlying these psychological phenomena.

关 键 词：感觉器官 视觉系统 图像调整 dLGN细胞 参数 空间频率 时间频率 图像形状 环形光栅 神经系统 

分 类 号：R339.146[医药卫生—人体生理学]