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Information Storage and Neural Control 



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Fig. 3. Subject at IOTA Apparatus. 



The same adjustment processes appear at the organ level, 

 except that multiple channels, of course, are also used. 



Individual Research 



For this study we designed and built an IOTA (Information 

 Overload Testing Aid) apparatus (Fig. 3). 



This is a piece of equipment by which stimuli are presented 

 to a subject on a transparent ground-glass screen, about 3x4 feet 

 in size. The apparatus is placed on a table in front of the subject, 

 who responds by pushing appropriate buttons arrayed before him. 

 Stimuli are thrown on the back of the screen by a Perceptoscope, 

 which is a projector capable of showing movie film at rates of 

 from one to twenty-four frames per second. The film contains a 

 program which presents black arrows on a white background, 

 which can appear in from one to eiglit of the eight two-inch wide 

 vertical slots which run down the screen. Arrows can assume any 

 one of eight angular positions, like clock hands. Before the subject 



