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Updated: Jan 26, 2026
06:57
Pavlovian Conditioned Approach Training in Rats
Published on: February 4, 2016
11.4K
Development of behavioural automaticity by extended Pavlovian training in an insect
Makoto Mizunami1, Sho Hirohata2, Ai Sato3
11 Faculty of Science, Hokkaido University , Sapporo 060-0810 , Japan.
Proceedings. Biological Sciences
|April 10, 2019
Summary
Repetitive training transforms learned behaviors in crickets from goal-driven to automatic. Extended training leads to conditioned responses (CR) that persist even when the outcome value is reduced, indicating habit formation.
Area of Science:
- Behavioral neuroscience
- Animal behavior
- Neuroethology
Background:
- Learned actions in mammals shift from goal-driven to automatic with extended training.
- It was previously unknown if Pavlovian conditioning also develops value-insensitive behavior with extended training.
Purpose of the Study:
- To investigate if extended training in Pavlovian conditioning leads to value-insensitive behavior in crickets.
- To explore the neural mechanisms underlying the shift from goal-driven to automatic learned actions.
Main Methods:
- Pavlovian conditioning in crickets (Gryllus bimaculatus) associating an odor with water (unconditioned stimulus, US).
- Minimal vs. extended training protocols.
- Testing conditioned response (CR) after satiation (US devaluation).
- Pharmacological experiments targeting octopamine neurons.
Main Results:
- Crickets with minimal training showed no CR when satiated.
- Crickets with extended training exhibited CR even when satiated, indicating value-insensitivity.
- Octopamine neurons mediate US value signals and CR execution after minimal training.
- Neural control diminishes with training, leading to automatic CR.
Conclusions:
- Repetitive sensory experiences can induce a shift from goal-driven to automatic responses in crickets.
- Extended Pavlovian conditioning leads to value-insensitive behavior.
- Octopaminergic pathways are involved in regulating the goal-driven nature of learned actions.
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