58 



PSYCHOLOQY. 



Taste 



we know little tliat is definite. Wliat little there is points 

 to the lower temporal regions again. Consult Terrier as 

 below. 



Touch. 



Interesting problems arise with regard to the seat of 

 tactile and muscular sensibility. Hitzig, whose experiments 

 on dogs' brains fifteen years ago opened the entire subject 



Fig. 19. — Luciani's Olfactory Region in the Dog. 



which we are discussing, ascribed the disorders of motility 

 observed after ablations of the motor region to a loss of 

 what he called muscular consciousness. The animals do 

 not notice eccentric positions of their limbs, will stand with 

 their legs crossed, with the affected paw resting on its back 

 or hanging over a table's edge, etc.; and do not resist our 

 bending and stretching of it as thej resist with the un- 

 affected j)aw. Goltz, Munk, Schiff, Herzen, and others 

 promptly ascertained an equal defect of cutaneous sensi- 

 bility to pain, touch, and cold. The paw is not withdrawn 

 when pinched, remains standing in cold water, etc. Ter- 

 rier meauAvhile denied that there was any true anaesthesia 

 produced by ablations in the motor zone, and explains 

 the appearance of it as an effect of the sluggish motor 

 responses of the affected side." Munkf and Schiff |, on th& 



* Functions of the Brain, chap. x. § 14. 

 tUeber die Functionen d. Grossbirnrinde (1881), p. 50 

 tLezioni di Fisiolot'ia sperimeutale siil sistenia uervoso encefalico 

 (1873), p. 527 ff. Also 'Brain,' vol. ix. p. 298. 



