Ever wondered if you're alone in triple-checking your keys, locking the door, or turning off the lights before leaving home? Research from INSERM, a leading French biomedical institute, published in Nature Communications, confirms it's entirely normal—and traces it to activity in the cingulate cortex.
INSERM researchers tested macaques fitted with electrodes to monitor frontal cortex activity, focusing on the mid-cingulate cortex and lateral prefrontal cortex—key areas in decision-making. Using a "work or check" task, monkeys chose between a visual memory challenge to fill a progress gauge or checking a timer for fruit juice rewards. Results showed cingulate cortex neurons firing 500 milliseconds before those in the lateral prefrontal cortex during checks.
This discovery advances treatments for obsessive-compulsive disorder (OCD). In the U.S., some clinicians target the cingulate cortex with electrode-based electrocoagulation for treatment-resistant cases, but success rates hover at 30-40%. Imprecise targeting may explain limitations, per INSERM.
Building on these findings, INSERM launched a follow-up study to pinpoint OCD-related cingulate areas in humans (about 20 volunteers) and assess alterations in macaques. Results were anticipated for 2017-2018, potentially enabling targeted therapies to modulate cingulate activity and improve OCD outcomes.
