Prefrontal and anterior cingulate cortex neurons encode attentional targets even when they do not apparently bias...

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Systems Neuroscience

Background:

• Neurons in the anterior cingulate and prefrontal cortex (ACC/PFC) are thought to bias attention towards behaviorally relevant stimuli.
• The precise role of this attentional information in guiding ongoing behavior remains debated, with possibilities including direct biasing, corollary signaling, or error monitoring.

Purpose of the Study:

• To investigate the relationship between neural signals encoding attention information in the ACC/PFC and actual behavioral success during a cued attention task.
• To differentiate neuronal populations based on their linkage to behavioral outcomes.

Main Methods:

• Electrophysiological recordings from macaque monkeys performing a cued attention task.
• Quantification of spatial attention information encoded by ACC/PFC neurons.
• Analysis of neuronal activity in relation to trial correctness (correct vs. error trials).

Main Results:

• Three distinct neuronal groups were identified, differing in their encoding of attention targets and relationship to behavioral success.
• One group encoded targets irrespective of trial outcome, while another group's activity predicted correct performance.
• A third group showed activity biased towards targets only on error trials, suggesting a role in monitoring or counterfactual processing.

Conclusions:

• Only a subset of attention-related neural information in the ACC/PFC directly biases behavior.
• The findings suggest specialized neural subnetworks within the ACC/PFC for processing attentional information, behavioral guidance, and potentially error-related signals or counterfactual attention.