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Related Experiment Video

Updated: Jun 13, 2025

Whisker-signaled Eyeblink Classical Conditioning in Head-fixed Mice

Whisker-signaled Eyeblink Classical Conditioning in Head-fixed Mice

Published on: March 30, 2016

Discrimination training affects stimulus generalization in mice during Pavlovian eyeblink conditioning.

Francesca Romana Fiocchi^1,2, Nikki E S van Dorp^1,3, Stephanie Dijkhuizen¹

¹Department of Neuroscience, Erasmus MC Rotterdam, Rotterdam, Netherlands.

Frontiers in Behavioral Neuroscience

|September 9, 2024

Summary

Differential training in Pavlovian conditioning shapes stimulus generalization. Mice showed less timing generalization but similar probability and amplitude generalization after discrimination training, highlighting learning

Keywords:

cerebellum classical conditioning differential training generalization learning

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Area of Science:

Neuroscience
Behavioral Science
Learning and Memory

Background:

Stimulus discrimination and generalization are key for adaptive responses.
Understanding how discrimination training impacts generalization is crucial.
Previous studies explored generalization after non-differential training.

Purpose of the Study:

To investigate stimulus generalization following differential training in a Pavlovian eyeblink conditioning paradigm.
To determine how the difference between conditioned (CS+) and non-conditioned (CS-) stimuli affects generalization.
To compare generalization effects after differential versus non-differential training.

Main Methods:

Mice underwent differential Pavlovian eyeblink conditioning with a 10 kHz tone (CS+) and air-puff, alternating with 4, 9, or 9.5 kHz tones (CS-) without air-puff.
Generalization was tested using tones ranging from 2 kHz to 20 kHz.
Conditioned responses were analyzed for probability, amplitude, and timing.

Main Results:

Generalization level positively correlated with the difference between CS+ and CS- frequencies.
Generalization was observed for response probability and amplitude.
Generalization effects on the timing of conditioned responses were not significant.

Conclusions:

Differential training leads to more specific stimulus generalization compared to non-differential training.
Discrimination learning significantly influences the extent and nature of stimulus generalization.
These findings underscore the importance of discrimination in shaping learned motor responses.