Kahee niimi (7 risultati)

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Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - It is known that the medial geniculate body (MGB) is the last relay center in the audi tory system. Its projections to the auditory cortex have been studied extensively in the cat using retrograde cell degeneration and the Marchi technique. The auditory cortex has also been defined electrophysiologically and cytoarchitecturally by many authors (Fig. 1). Woolsey and Walzl (1942) first defined the primary (AI) and secondary (All) auditory areas by electrical stimulation of cochlear nerve fibers. Later studies have dem onstrated other cortical areas responsive to auditory stimulation: the posterior ecto sylvian area (Ep), the suprasylvian fringe (SF), the third auditory'area (AlII) in the sec ond somatic sensory area (SII), the insular area (Ins) or the fourth auditory area (AIV), and the temporal area (Temp). Classic anatomic methods, such as the Marchi and retrograde cell degeneration methods, were not suitable for studying the precise organization of the cortical pro jections of MGB, however, the Nauta method has been useful in the study of these pro jections (Wilson and Cragg, 1969; Niimi and Naito, 1972, 1974; Sousa-Pinto, 1973). These studies indicated that parts of MGB send differential projections to individual auditory areas, although considerable overlap of the projections is seen. Furthermore, some authors showed that the pulvinar nuclear group also projects to the auditory cor tex (Graybiel, 1973; Niimi et aI. , 1974a; Rosenquist et aI. , 1974).…

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Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Dedicated to Professor emeritus Ko Hirasawa on the Occasion of his 77. Birthday1 Introduction.- 2 Material and Methods.- 3 Results.- 3.1 Cytoarchitectural Subdivision of MGB.- 3.2 Primary Auditory Area.- 3.3 Secondary Auditory Area.- 3.4 Suprasylvian Fr.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -1 Introduction.- 2 Material and Methods.- 3 Results.- 3.1 Cytoarchitectural Subdivision of MGB.- 3.2 Primary Auditory Area.- 3.3 Secondary Auditory Area.- 3.4 Suprasylvian Fringe.- 3.5 Dorsal Part of the Posterior Ectosylvian Area.- 3.6 Ventral Part of the Posterior Ectosylvian Area.- 3.7 Insulotemporal Area.- 3.8 Second Somatic Sensory Area.- 4 Discussion.- 4.1 Retrograde Axonal Transport of HRP.- 4.2 Primary Auditory Area.- 4.3 Secondary Auditory Area.- 4.4 Suprasylvian Fringe.- 4.5 Dorsal Part of the Posterior Ectosylvian Area.- 4.6 Ventral Part of the Posterior Ectosylvian Area.- 4.7 Insulotemporal Area.- 4.8 Second Somatic Sensory Area.- 5 Summary.- References.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 72 pp. Englisch.…