Rate and Temporal Coding Mechanisms in the Anterior Cingulate Cortex for Pain Anticipation.

ABSTRACT: Pain is a complex sensory and affective experience. Through its anticipation, animals can learn to avoid pain. Much is known about passive avoidance during a painful event; however, less is known about active pain avoidance. The anterior cingulate cortex (ACC) is a critical hub for affective pain processing. However, there is currently no mechanism that links ACC activities at the cellular level with behavioral anticipation or avoidance. Here we asked whether distinct populations of neurons in the ACC can encode information for pain anticipation. We used tetrodes to record from ACC neurons during a conditioning assay to train rats to avoid pain. We found that in rats that successfully avoid acute pain episodes, neurons that responded to pain shifted their firing rates to an earlier time, w

SUBMITTER: Urien L 

PROVIDER: S-EPMC5974274 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature