Theta-based organization of information in the frontal cortex.

Theta (4–10 Hz) oscillations selectively couple to behaviorally relevant information in spiking across dorsolateral and ventrolateral prefrontal cortex and frontal eye fields during dot-pattern categorization in non-human primates.

• Why it matters: It remains unclear how theta coordinates activity at local scales within frontal subareas, not just across long-range connections.
• What they did: In non-human primates performing dot-pattern categorization, theta phase was tested for selective coupling to spiking, and theta’s directional influence was assessed across dlPFC/vlPFC and FEF during choices and outcomes.
• The result: Theta influences posterior-directed interactions during choices and after correct outcomes but not after errors, while anterior-directed theta is stronger after errors; theta also supports nested cross-frequency interactions linking theta with beta and beta with gamma.

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