Animal models relevant to digital technology-based disorders.

Area of Science:

• Behavioral neuroscience
• Addiction research
• Animal modeling

Background:

• Established animal models exist for substance and gambling disorders.
• No current animal models effectively capture digital technology-based disorders like Internet gaming disorder.
• Casile et al. (2025) developed a rat touchscreen paradigm for gaming disorder phenotypes, but used food reinforcers, limiting translational relevance.

Purpose of the Study:

• To propose an enhancement of the Casile et al. touchscreen paradigm for modeling Internet gaming disorder.
• To investigate the role of non-food reinforcers in shaping behavioral persistence relevant to digital addiction.
• To differentiate intrinsic touchscreen interaction effects from hedonic food reinforcement.

Main Methods:

• Integrating the Casile et al. touchscreen paradigm with non-food operant conditioning (e.g., light self-administration).
• Conducting cross-species comparisons (rats and mice) to identify species-specific versus generalizable behavioral mechanisms.
• Analyzing behavioral persistence and habituation patterns.

Main Results:

• The proposed integration allows dissociation of sensory feedback from food reinforcement.
• Cross-species comparisons are crucial for distinguishing generalizable behavioral mechanisms.
• The model provides a simplified framework to study non-food, non-drug reinforcement contingencies.

Conclusions:

• Modifying existing animal models with non-food reinforcers can improve their relevance for studying digital technology-based disorders.
• Animal models, while limited, offer valuable insights into the behavioral mechanisms underlying addiction.
• This approach facilitates research into behavioral persistence shaped by digital interaction without confounding factors.