246 



The Control of Salivary Secretion 



monkeys (Sachs, Brendler and Fulton, 1949; Hess and Akert, 

 1 951). In their operations on patients under local anaesthesia Pen- 

 field and Rasmussen (1950) noticed a flow of saliva when the region 

 surrounding the lower part of the fissure of Rolando was stimulated 

 electrically ; the secretion was associated with tongue movements, 

 mastication and swallowing. In anaesthetized dogs Babkin and van 

 Buren (1951) could elicit the same effects by stimulating the 

 corresponding gyri (Fig. 12.2). 



Salivation has also been produced by electrical stimulation in the 

 rhinencephalon. In cats with the neopallium previously removed 

 Schaltenbrand and Cobb (1930) found that excitation of the an- 



Hind limb* 



f. centralis 



g compositus ant 



s. sylvii 



Do<}_ 



Fig. 12.2. Diagram illustrating the distribution of the motor representation 



in man and dog. 



The area containing "motor cortex" defined as thick agranular cortex with giant pyramidal cells 

 in the fifth layer has been indicated in dots (Babkin and v. Buren, 1951). 



