1. The capacity of cuneate neurones to attain normal functional properties following neonatal @entity10036 was investigated with single neurone recording in anaesthetized @entity468 , 12-24 months subsequent to a controlled @entity130 . Effectiveness of the @entity1897 was confirmed by the abolition of the median nerve compound action potential following the crush. 2. Cuneate recording was carried out after denervation of the forearm, apart from the median nerve, to ensure that neurones studied had receptive fields within the distribution zone of the regenerated median nerve. Controlled and reproducible tactile stimuli were used to evaluate the functional capacities of neurones to determine whether they were consistent with those reported earlier for cuneate neurones in @entity468 that had normal peripheral nerve development. 3. Twenty-two cuneate neurones with well-defined tactile receptive fields within the distribution zone of the regenerated median nerve were classified according to their adaptation characteristics and functional properties. Slowly adapting neurones responded throughout static skin indentations and had graded and approximately linear stimulus-response relations over indentation ranges up to 1.5 mm. Rapidly adapting neurones responded to the dynamic phases of skin indentations and could be divided into two broad classes, one most sensitive to vibrotactile stimuli at 200-400 Hz which appeared to receive a predominant input from Pacinian corpuscle receptors, and a non-Pacinian group that included neurones most sensitive to skin vibration at 5-50 Hz which appeared to receive glabrous skin input from the rapidly adapting class of afferent fibres. 4. Based on the stimulus-response relations and on measures of phase locking in the responses to vibrotactile stimuli, it appears that the functional properties of cuneate neurones activated from the field of a regenerated median nerve subsequent to a neonatal nerve @entity130 were consistent with those reported previously for 'control' cuneate neurones. The results indicate that cuneate neurones can acquire normal tactile coding capacities despite the disruption caused by prior @entity130 to their peripheral nerve source.

The effects of neonatal XXXX on the responsiveness of tactile neurones within the cuneate nucleus of the cat.

@entity1897 :: ('MESH:D010523', 'Disease') :: ['peripheral nerve injury'] @entity10036 :: ('MESH:D020423', 'Disease') :: ['median nerve injury'] @entity468 :: ('9685', 'Species') :: ['cats'] @entity130 :: ('MESH:D014947', 'Disease') :: ['crush injury']
@entity10036 :: (MESH:D020423,Disease) :: ['median nerve injury']
