کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4339393 | 1295752 | 2010 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efferent connections of an auditory area in the caudal insular cortex of the rat: anatomical nodes for cortical streams of auditory processing and cross-modal sensory interactions
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کلمات کلیدی
PFCSPFPCVPpcVPMpcTe3VTe1iNSCVPLMGDMGVTRNVPMIAFECICMGMCPUPPCLAAMPFCCeA - CEABiocytin - بیوسیتینUnit discharge - تخلیه واحدPot - دیگSomatosensory system - سیستم Somatosensorynociception - غربالگریprefrontal cortex - قشر prefrontalprimary somatosensory cortex - قشر اسموتیسنسوری اولیهprimary motor cortex - قشر حرکتی اولیهexternal cortex of the inferior colliculus - قشر خارجی کولیکولوس پایینinsular cortex - قشر ساحلیAgranular insular cortex - قشر ساحلی AgranularGranular insular cortex - قشر ساقه غدهdysgranular insular cortex - قشر ساکن غده تیروئیدmedial prefrontal cortex - قشر غده پروسترولposterior parietal cortex - قشر پاراوتیک خلفیSecondary somatosensory cortex - قشر کمخونی ثانویهThalamic reticular nucleus - هسته reticular توالیومSuprageniculate nucleus - هسته SuprageniculateVentral posteromedial thalamic nucleus - هسته تالاموم پس از معدهventral posterolateral thalamic nucleus - هسته تالامیک پست سلولی شکمیcentral amygdaloid nucleus - هسته مرکزی amygdaloidLateral amygdaloid nucleus - هسته مرکزی آمیگدولید جانبیpontine nucleus - هسته پونتینmedial geniculate nucleus - هسته ژنومیک محیطیCaudate putamen - پاتامن CaudateAID - کمکposterior thalamic nuclear group - گروه اتمی تالامیک هسته ای
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the rat cortex, the two non-primary auditory areas, posterodorsal and ventral auditory areas, may constitute the two streams of auditory processing in their distinct projections to the posterior parietal and insular cortices. The posterior parietal cortex is considered crucial for auditory spatial processing and directed attention, while possible auditory function of the insular cortex is largely unclear. In this study, we electrophysiologically delineated an auditory area in the caudal part of the granular insular cortex (insular auditory area, IA) and examined efferent connections of IA with anterograde tracer biocytin to deduce the functional significance of IA. IA projected to the rostral agranular insular cortex, a component of the lateral prefrontal cortex. IA also projected to the adjacent dysgranular insular cortex and the caudal agranular insular cortex and sent feedback projections to cortical layer I of the primary and secondary somatosensory areas. Corticofugal projections terminated in auditory, somatosensory and visceral thalamic nuclei, and the bottom of the thalamic reticular nucleus that could overlap the visceral sector. The ventral part of the caudate putamen, the external cortex of the inferior colliculus and the central amygdaloid nucleus were also the main targets. IA exhibited neural response to transcutaneous electrical stimulation of the forepaw in addition to acoustic stimulation (noise bursts and pure tones). The results suggest that IA subserves diverse functions associated with somatosensory, nociceptive and visceral processing that may underlie sound-driven emotional and autonomic responses. IA, being potentially involved in such extensive cross-modal sensory interactions, could also be an important anatomical node of auditory processing linked to higher neural processing in the prefrontal cortex.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 166, Issue 4, 14 April 2010, Pages 1140-1157
Journal: Neuroscience - Volume 166, Issue 4, 14 April 2010, Pages 1140-1157
نویسندگان
A. Kimura, H. Imbe, T. Donishi,