Pseudounipolar neurons in the dorsal root ganglia(DRG),as the central nodes of primary sensory afferents,possess a distinctive T-junction that is not merely a morphological peculiarity but also performs complex roles ...Pseudounipolar neurons in the dorsal root ganglia(DRG),as the central nodes of primary sensory afferents,possess a distinctive T-junction that is not merely a morphological peculiarity but also performs complex roles in rapid,multiplexed shunting and regulation of sensory signals.This specialized geometry enables separation,filtering,and feedback regulation of neuronal signals,thereby coordinating peripheral and central responses at multiple levels.Recent advances,including spatial transcriptomics,single-cell sequencing,super-resolution microscopy,organoid models,and novel electrophysiological methods,have permitted more precise dissection of the T-junction's molecular composition,ion-channel distribution,and electrophysiological properties.Here,we review current knowledge of the T-junction's developmental regulation and multilayered molecular networks,and we detail its functional alterations in both physiological signaling and pathological pain states,with particular emphasis on ion-channel modulation,signal attenuation,and selective transmission mechanisms.Finally,we discuss contemporary pain-intervention approaches and prospects for precision-targeted therapies,aiming to provide a theoretical foundation for future studies in pain physiology and clinical translation.展开更多
目的筛选能够在功能性核磁共振造影(functional magnetic resonance imaging,fMRI)上稳定激活Wernicke区的汉语听觉任务刺激模式。方法选用正常右利手中国汉族人10例,采用组块设计,应用西门子SONATA1.5TMRI分别进行不同的汉语语言听觉...目的筛选能够在功能性核磁共振造影(functional magnetic resonance imaging,fMRI)上稳定激活Wernicke区的汉语听觉任务刺激模式。方法选用正常右利手中国汉族人10例,采用组块设计,应用西门子SONATA1.5TMRI分别进行不同的汉语语言听觉刺激任务下的脑功能成像,汉语语言听觉刺激任务分2组:词汇理解组、段落理解组。同时以音乐组作为单纯听觉刺激对照。图像资料经处理后获得脑区激活图。结果音乐组可见双侧颞横回激活,激活以右侧颞叶为主;词汇理解组与段落理解组10例均可见以左颞叶为主的激活(Wernicke区),其中段落理解组激活信号更加强烈,时间-信号强度动态曲线稳定。结论汉语的段落理解任务可以作为临床观察fMRI中激活Wernicke区的听觉语言任务刺激模式。展开更多
本刊开办异或新虹栏目,旨在每期介绍一位在海外定居,学有成就的华裔学者,他们将介绍国外最新的临床、科研动态,同时欢迎对国内专业发展提出建设性意见,畅所欲言,批评争鸣,以诚恳求实的治学态度与国内同仁同道共勉。同时借本栏目广招天...本刊开办异或新虹栏目,旨在每期介绍一位在海外定居,学有成就的华裔学者,他们将介绍国外最新的临床、科研动态,同时欢迎对国内专业发展提出建设性意见,畅所欲言,批评争鸣,以诚恳求实的治学态度与国内同仁同道共勉。同时借本栏目广招天下饱学贤良之才,热情杂志建设之士,共办《Jounal of Otology》,为促进国际间合作搭建一个学术交流的平台,有效快速地将中国不断发展的耳科学成果向世界展示,欢迎广大海外学者积极投稿。展开更多
基金supported by grant from the National Key Technology Support Program of the Ministry of Science and Technology of China(No.2021ZD0203204)。
文摘Pseudounipolar neurons in the dorsal root ganglia(DRG),as the central nodes of primary sensory afferents,possess a distinctive T-junction that is not merely a morphological peculiarity but also performs complex roles in rapid,multiplexed shunting and regulation of sensory signals.This specialized geometry enables separation,filtering,and feedback regulation of neuronal signals,thereby coordinating peripheral and central responses at multiple levels.Recent advances,including spatial transcriptomics,single-cell sequencing,super-resolution microscopy,organoid models,and novel electrophysiological methods,have permitted more precise dissection of the T-junction's molecular composition,ion-channel distribution,and electrophysiological properties.Here,we review current knowledge of the T-junction's developmental regulation and multilayered molecular networks,and we detail its functional alterations in both physiological signaling and pathological pain states,with particular emphasis on ion-channel modulation,signal attenuation,and selective transmission mechanisms.Finally,we discuss contemporary pain-intervention approaches and prospects for precision-targeted therapies,aiming to provide a theoretical foundation for future studies in pain physiology and clinical translation.
文摘目的筛选能够在功能性核磁共振造影(functional magnetic resonance imaging,fMRI)上稳定激活Wernicke区的汉语听觉任务刺激模式。方法选用正常右利手中国汉族人10例,采用组块设计,应用西门子SONATA1.5TMRI分别进行不同的汉语语言听觉刺激任务下的脑功能成像,汉语语言听觉刺激任务分2组:词汇理解组、段落理解组。同时以音乐组作为单纯听觉刺激对照。图像资料经处理后获得脑区激活图。结果音乐组可见双侧颞横回激活,激活以右侧颞叶为主;词汇理解组与段落理解组10例均可见以左颞叶为主的激活(Wernicke区),其中段落理解组激活信号更加强烈,时间-信号强度动态曲线稳定。结论汉语的段落理解任务可以作为临床观察fMRI中激活Wernicke区的听觉语言任务刺激模式。
文摘本刊开办异或新虹栏目,旨在每期介绍一位在海外定居,学有成就的华裔学者,他们将介绍国外最新的临床、科研动态,同时欢迎对国内专业发展提出建设性意见,畅所欲言,批评争鸣,以诚恳求实的治学态度与国内同仁同道共勉。同时借本栏目广招天下饱学贤良之才,热情杂志建设之士,共办《Jounal of Otology》,为促进国际间合作搭建一个学术交流的平台,有效快速地将中国不断发展的耳科学成果向世界展示,欢迎广大海外学者积极投稿。
