5S8 WILL AND VOLUNTARY MOVEMENTS. 



reason for believing that the Kinsesthetic must be in the 

 closest functional relationship both with the Visual and 

 with the Auditory Centres. From one or more (but per- 

 haps more especially from the first) of these inter-related 

 Perceptive Centres or their annexes, * internuncial fibres' 

 issue, by which they are brought into functional relations 

 wdth the great underlying motor ganglia — the Corpora 

 Striata. 



Stimulation of certain sets of such ' internuncial fibres ' 

 should produce special Choreic or Convulsive Movements ; 

 destruction of them should produce Paralysis ; and, look- 

 ing to the direction in which they transmit their stimuli, 

 analogy would lead us to infer that the severance of 

 their connections with cortical nerve-cells might lead to 

 small bands or tracts of * descending degenerations ' be- 

 tween the seats of such severance and the corresponding 

 Corpus Striatum — yet these are the results the occurrence 

 of which is so confidently relied on by some in support 

 of the * motor * functions of such portions of the Cerebral 

 Cortex. 



