The activity of occipitotemporal regions involved in linguistic reading processes,such as the ventral occipitotemporal cortex(vOT),is believed to exhibit strong interactions during higher-order language processing,spe...The activity of occipitotemporal regions involved in linguistic reading processes,such as the ventral occipitotemporal cortex(vOT),is believed to exhibit strong interactions during higher-order language processing,specifically in the connectivity between the occipital gyrus and the temporal gyrus.In this study,we utilized functional magnetic resonance imaging(fMRI)with psychophysiological interaction(PPI)and dynamic causal modeling(DCM)to investigate the functional and effective connectivity in the occipitotemporal network during speed reading.We conducted the experiment with native Japanese speakers who underwent and without speed-reading training and subsequently performed established reading tasks at different speeds(slow,medium,and fast)while undergoing 3-Tesla Siemens fMRI.Our activation analyses revealed significant changes in occipital and temporal regions as reading speed increased,indicating functional connectivity within the occipitotemporal network.DCM results further demonstrated more intricate effective connections and high involvement within the occipitotemporal pathway:(1)reading signals originated from the inferior occipital gyrus(iO),distributed to the vOT and the posterior superior temporal sulcus(pSTS),and then gathered in the anterior superior temporal sulcus(aSTS);(2)reading speed loads had modulation effects on the pathways from the aSTS to vOT and from the iO to vOT.These findings highlight the complex connectivity and dynamic interactions within the occipitotemporal network during speed-reading processes.展开更多
Studies concerning phonological processing mainly use written stimuli.Functional magnetic resonance imaging was used to investigate the brain regions related to the phonological processing under the picture stimulus i...Studies concerning phonological processing mainly use written stimuli.Functional magnetic resonance imaging was used to investigate the brain regions related to the phonological processing under the picture stimulus in the rhyme task of Chinese language.Results of the test in 13 healthy college students whose native language is Chinese showed the extensive activation in the frontal lobe,parietal lobe and the occipitotemporal cortex,including the inferior frontal gyrus,middle frontal gyrus,supramarginal gyrus and medial occipitotemporal gyrus under the picture stimuli.Moreover,phonological processing induced activation in the superior temporal gyrus(BA 22)under the picture stimuli,but activation was not found in the middle temporal gyrus.展开更多
基金Japan Society for the Promotion of Science(21K15614)National Natural Science Foundation of China(62103404)Chinese Academy of Sciences President’s International Fellowship Initiative(2022VBA0031).
文摘The activity of occipitotemporal regions involved in linguistic reading processes,such as the ventral occipitotemporal cortex(vOT),is believed to exhibit strong interactions during higher-order language processing,specifically in the connectivity between the occipital gyrus and the temporal gyrus.In this study,we utilized functional magnetic resonance imaging(fMRI)with psychophysiological interaction(PPI)and dynamic causal modeling(DCM)to investigate the functional and effective connectivity in the occipitotemporal network during speed reading.We conducted the experiment with native Japanese speakers who underwent and without speed-reading training and subsequently performed established reading tasks at different speeds(slow,medium,and fast)while undergoing 3-Tesla Siemens fMRI.Our activation analyses revealed significant changes in occipital and temporal regions as reading speed increased,indicating functional connectivity within the occipitotemporal network.DCM results further demonstrated more intricate effective connections and high involvement within the occipitotemporal pathway:(1)reading signals originated from the inferior occipital gyrus(iO),distributed to the vOT and the posterior superior temporal sulcus(pSTS),and then gathered in the anterior superior temporal sulcus(aSTS);(2)reading speed loads had modulation effects on the pathways from the aSTS to vOT and from the iO to vOT.These findings highlight the complex connectivity and dynamic interactions within the occipitotemporal network during speed-reading processes.
基金the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)the Key Program of National Social Science Foundation of China in 2010,No.10&ZD126+6 种基金the National Natural Science Foundation of China,No.30740040the National Social Science Foundation of China,No.09CYY016the Humanities and Social Sciences Project of Ministry of Education during the 11th"Five-Year"Plan Period,No.07JA740027the Major Basic Research Program of Natural Science Research of Higher Learning School of Jiangsu Province,No.10KJA180051the Scientific Research Innovation Program for Postgraduate from Higher Learning School of Jiangsu Province in 2009,No.CX09S_011Rthe Key Program of Postgraduate Innovation Engineering of Xuzhou Normal University,No.08YLA003the Key Humanities and Social Sciences Program of Xuzhou Normal University in 2010,No.10SWA06
文摘Studies concerning phonological processing mainly use written stimuli.Functional magnetic resonance imaging was used to investigate the brain regions related to the phonological processing under the picture stimulus in the rhyme task of Chinese language.Results of the test in 13 healthy college students whose native language is Chinese showed the extensive activation in the frontal lobe,parietal lobe and the occipitotemporal cortex,including the inferior frontal gyrus,middle frontal gyrus,supramarginal gyrus and medial occipitotemporal gyrus under the picture stimuli.Moreover,phonological processing induced activation in the superior temporal gyrus(BA 22)under the picture stimuli,but activation was not found in the middle temporal gyrus.
