Functional organization of climbing fibre projection to the cerebellar anterior lobe of the rat

摘要: 1. The input characteristics and distribution of climbing fibre field potentials evoked by electrical stimulation various parts the skin were investigated in cerebellum barbiturate anaesthetized rats. 2. Climbing responses recorded sagittally oriented microelectrode tracks across mediolateral width anterior lobe. fibres with similar response latencies convergence patterns terminated sagittal bands widths 0.5-1.5 mm. principal organization lobe respect to locations zones was that cat ferret. Hence, rat tentatively named a, b, c1, c2 d1 zones. 3. In contrast ferret, a zone characterized short latency ipsilateral input. Furthermore, it divisible into medial 'a1' convergent, proximal lateral 'ax' somatotopically organized A forelimb area location as X found, but formed an integral part ax zone. somatotopic ipsilateral, also found c1 4. Rostrally lobe, activated at from side body transverse band which extended midline end 5. absence C3 Y may be interpreted reflection differences motor systems compared cat. Skilled movements, are controlled C1, via interposed nucleus, partly rostrolateral fastigial nucleus.