Implementation of a movement paradigm using the Commodore 64 microcomputer

Area of Science:

• Neuroscience
• Behavioral Science
• Computer Science

Background:

• Implementing precise behavioral paradigms in animal research often requires specialized and costly equipment.
• Microcomputers offer a potential low-cost alternative for controlling experimental tasks.

Purpose of the Study:

• To describe the implementation of an alternating movement paradigm for monkeys using a Commodore 64 microcomputer.
• To demonstrate the system's capability in monitoring behavioral parameters and delivering rewards.

Main Methods:

• Utilized a Commodore 64 microcomputer with custom software (BASIC and machine language) to control the experiment.
• The system monitored user-selectable input signals (e.g., joint position) and displayed them with a target box on a video monitor.
• Incorporated auditory cues for target entry and trial completion, along with a reinforcement delivery system.

Main Results:

• Successfully implemented an alternating movement paradigm for monkeys.
• The system demonstrated effective monitoring of behavioral parameters and control of task progression.
• The use of a low-cost microcomputer minimized hardware expenses while maintaining functionality.

Conclusions:

• An inexpensive Commodore 64-based system can be effectively used to implement complex behavioral paradigms for animal research.
• The described software and hardware approach is versatile and applicable to various tasks requiring behavioral parameter alternation.