AUDITORY CENTER IN THE CORTEX 



647 



figure 392. The hippocampus must be in some way connected with smell, 

 since a lesion of it, leaving the olfactory tract uninjured, seriously interferes 

 with that sense. 



Taste Center of the Cortex. It is very uncertain where the taste center 

 is situated, if such exist. It has been placed in the anterior portion of the 

 inferior temporal convolution, not far from that of smell, figure 405. 



Auditory Center in the Cortex. This center has been localized in 



FIG. 406. Scheme of the Central Connections of the Optic Fibers. (Cunningham.) 



the superior temporal convolution. Experiments have been made which 

 connect auditory impulses on either side with the inferior corpus quadri- 

 geminum and the median corpus geniculatum, for when the internal ear is 

 destroyed there results atrophy of these bodies as well as of the lateral fillet 

 of the opposite side. On the other hand, destruction of the part of the tem- 

 poral lobe above indicated is similarly followed by atrophy of the nuclei of 

 the same side. These nuclei bear much the same relation to the sense of 

 hearing as do the superior corpora quadrigemina and the lateral corpora 

 geniculata to the sense of sight, figures 406 and 414. 



