Temporal generalization accounts for response resurgence in the peak procedure

Area of Science:

• Behavioral neuroscience
• Animal cognition
• Operant conditioning

Background:

• The peak interval (PI) procedure is a standard method for assessing temporal interval production in animals.
• This procedure involves fixed interval (FI) schedules with interspersed non-reinforced probe trials, which can elicit response resurgence.

Purpose of the Study:

• To investigate the phenomenon of response resurgence in the peak interval procedure.
• To determine the factors influencing response resurgence, specifically the role of expected reinforcement timing.
• To develop and test a quantitative model for understanding animal responses to reinforcement omission.

Main Methods:

• Replication of response resurgence in rats and pigeons using the peak interval procedure.
• Systematic variation of fixed interval (FI) and non-reinforced probe trial durations.
• Development of a quantitative model of resurgence based on signaling properties of reinforcement omission.
• Simulation of model results using a stochastic binary counter.

Main Results:

• Response resurgence was reliably observed in both rats and pigeons.
• The occurrence of resurgence was dependent on the temporal relationship between reinforcement availability.
• Timing accuracy during both standard and probe trials adhered to Weber's law.
• The quantitative model successfully captured the observed resurgence patterns.

Conclusions:

• Response resurgence is a predictable behavior in the peak interval procedure, linked to temporal expectancies.
• Animal timing behavior, including resurgence, can be quantitatively modeled and appears to follow fundamental mathematical principles like Weber's law.
• The findings offer insights into how animals process and respond to the omission of expected reinforcement.