Researchers at Yale University have identified that neurons in the brain's claustrum track prediction errors and uncertainty during aversive learning tasks.

A study published in Nature Neuroscience suggests that the claustrum, a poorly understood brain region, plays a role in tracking the gap between expectations and reality. Researchers from Yale University and other institutions monitored neural activity in seven epilepsy patients as they performed a computer-based game. The findings indicate that claustrum neurons, alongside those in the anterior cingulate cortex, encode latent variables like uncertainty and prediction error during aversive learning.

Methodology and Neural Monitoring

The research team recorded single-neuron activity from the claustrum, anterior cingulate cortex, and amygdala of seven patients undergoing clinical seizure monitoring. While playing a game that required navigating a virtual spaceship through asteroid belts, participants had to adjust their expectations as the researchers altered the locations of safe passages. The team used a mathematical model to estimate the participants' uncertainty and prediction errors at specific moments during the task.

Distinct Roles in Brain Regions

The study found that neurons in the claustrum and anterior cingulate cortex track hidden quantities, though they operate with different temporal profiles. While the anterior cingulate cortex carried uncertainty signals both between trials and during the active-avoidance phase, claustrum signals were primarily evident during the active-avoidance phase when asteroids were approaching. The amygdala showed minimal modulation related to these latent variables.