Stimulus change, reactions to novelty, and response decrement.

1959 ◽  
Vol 66 (2) ◽  
pp. 96-103 ◽  
Author(s):  
Dalbir Bindra
Keyword(s):  
Stimulus Change ◽  
Response Decrement

Training to test interval as a determinant of a temporally graded ECS-produced response decrement in rats.

1970 ◽  
Vol 71 (2, Pt.1) ◽  
pp. 318-324 ◽  
Author(s):  
Richard A. Hughes ◽  
Robert J. Barrett ◽  
Oakley S. Ray
Keyword(s):  
Response Decrement ◽  
Test Interval

Differential Activity in Rats as a Function of Deprivation, Stimulus Change, and Recording Method

1970 ◽  
Vol 26 (1) ◽  
pp. 59-64 ◽  
Author(s):  
Steven Gruenau ◽  
Clemm C. Kessler
Keyword(s):  
Direct Observation ◽  
Stimulus Change ◽  
Internal State ◽  
Relay System ◽  
Adult Rats ◽  
Press Rate ◽  
Recording Method

The effects of stimulus changes on activity in 20 food-deprived and 20 nondeprived adult rats were studied using a photo-relay method, direct observation, and bar-press rate. Differences in activity as measured by the photo-cells and differences in bar-presses were significant ( p < .001) for stimulation, deprivation, and the interactions. Ss in the stimulus change groups had the highest activity counts, their most frequent single behavior being exploration. The results confirmed the utility of the photo-relay system of measurement, demonstrated that stimulus change differentially affected the activity of deprived and nondeprived Ss, and supported the conclusion that stimulation sensitized S to its internal state to which it then reacted.

Stimulus-Change Effects of Forcing in Alternation Behavior

1966 ◽  
Vol 19 (2) ◽  
pp. 515-518 ◽  
Author(s):  
R. N. Hughes
Keyword(s):  
Free Choice ◽  
Stimulus Change ◽  
Lower Degree ◽  
Alternation Behavior ◽  
Subsequent Removal ◽  
Transparent Barrier ◽  
Initial Attraction ◽  
High Degree

To test the hypothesis that forcing left or right in a T-maze produces more alternation because of the stimulus-change resulting from subsequent removal of the arm barrier, rats were given free-choice trials and forced trials with a wooden barrier (favouring a high degree of change) and with a transparent barrier (favouring a lower degree of change). Although alternation was unaffected by the three conditions, the percentage of first investigatory responses directed toward the alternate arm on Trial 2 was highest following forcing with the wooden barrier. It was concluded that a stimulus-change explanation for the effects of forcing was acceptable if these first investigatory responses were acknowledged as indices of initial attraction of attention by an arm.

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