The effect of a twenty-four hour intertrial interval on the acquisition of spatial discrimination by hippocampally damaged rats

1972 ◽  
Vol 8 (3) ◽  
pp. 457-458 ◽  
Author(s):  
Larry W. Means ◽  
Michael L. Woodruff ◽  
Robert L. Isaacson
Keyword(s):  
Intertrial Interval ◽  
Spatial Discrimination

Differential Eyelid Conditioning as a Function of CS-UCS Interval and Distance Separating the CSS

1969 ◽  
Vol 25 (2) ◽  
pp. 407-411
Author(s):  
W. E. Vandament
Keyword(s):  
Differential Conditioning ◽  
Eyelid Conditioning ◽  
Intertrial Interval ◽  
Spatial Discrimination ◽  
Interval Functions

Human Ss were given differential eyelid conditioning at CS-UCS intervals of 400, 600, and 800 msec. to visual CSs separated by 1.25 and 2.50 in. The CS outlines were not visible to S during the intertrial interval as they customarily are in spatial discrimination tasks. CS+ response levels increased with interval throughout the range employed with CS− levels increasing only through 600 msec. No differentiation was observed at 400 and 600 msec. intervals at either level of separation. These results indicate that CS-UCS interval functions in differential conditioning cannot be generally defined and must be related to the conditions employed in a given experiment.

Single-Alternation Patterning with Sucrose Reinforcement and Varied Intertrial Intervals in the Rat

1979 ◽  
Vol 44 (3_suppl) ◽  
pp. 1311-1316
Author(s):  
Richard J. Nicholls ◽  
Victor Duch
Keyword(s):  
Classical Conditioning ◽  
Intertrial Interval ◽  
Short Interval ◽  
Single Alternation ◽  
Extinction Data ◽  
Sucrose Reward ◽  
Sucrose Reinforcement

Four groups of rats were given single-alternation training in a runway using sucrose reward and then extinguished. Only subjects given training with a short interval (10 sec.) between rewarded and nonrewarded trials and a long interval (40 min.) between nonrewarded and rewarded trials learned patterned responding. This duplicated the results found in classical conditioning with a similar manipulation. The acquisition and extinction data led to the conclusion that intertrial interval cues can be made more important than aftereffects in producing patterning with sucrose reinforcement.

Two-Point Discrimination: Asymmetry in Spatial Discrimination on the Two Sides of the Tongue, a Preliminary Report

1971 ◽  
Vol 32 (2) ◽  
pp. 368-370 ◽  
Author(s):  
Gerald N. McCall ◽  
Nancy Morgan Cunningham
Keyword(s):  
Young Adult ◽  
Preliminary Report ◽  
Sensory System ◽  
Statistical Evidence ◽  
Spatial Discrimination ◽  
Discrimination Ability ◽  
Left And Right ◽  
Two Sides

25 young adult Ss were used in a study of asymmetry in spatial discrimination on the two sides of the tongue. 10 two-point limen values were established on the left and right tongue margins of each S. Analysis showed statistical evidence of asymmetry in spatial discrimination ability in 14 of the 25 Ss, supporting the concept that “sensory sidedness” in the tactile sensory system may be a normal neurological phenomenon.

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