610 



MARCEL MONNIER AND P. KRUPP 



Fig. 3. Top: hammock for the restrained animal. Both forelegs and hindlegs can 

 move freely. Bottom: recording from the brain of imrestrained animal. 



respectively. In some animals the brain was removed after the experiment^ 

 for histologic control. 



Results 



Action of Gamma Radiation on the Spontaneous Electrical Brain 



Activity 



Gamma radiation slightly, but definitely, alters the spontaneous electrical 

 brain activity in the acute experiment (Fig. 4). 



