Short-Term Memory in the MacAque Monkey: Coding Response During Delay Interval

Abstract

The possibility that macaque monkeys code the position of a cue by color stimuli was investigated. The monkeys were trained on a delayed response task and a conditional position discrimination task based on color stimuli, and were tested while the color stimuli were presented during the delay interval of the delayed response task. The monkeys performed the task better when the colors were presented during the delay. However, the monkeys did not spontaneously choose an appropriate color to code the position of the cue in a choice situation, although they could be trained to show the coding response.

Key Words:

• short-term memory
• macaque monkey