Functional heterogeneity in cingulate cortex: the anterior executive and posterior evaluative regions

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Neuroanatomy

Background:

• The cingulate gyrus, traditionally linked to emotion within the limbic system, has a more complex functional role.
• Recent findings challenge the oversimplified view, indicating broader involvement in sensory, motor, and cognitive processes.

Purpose of the Study:

• To delineate the distinct functional roles of the anterior and posterior cingulate cortices.
• To explore the involvement of cingulate cortex subdivisions in emotional, sensory, motor, and cognitive functions.

Main Methods:

• Review of clinical and experimental findings.
• Analysis of lesion studies and neuronal response patterns.
• Examination of anatomical connections with related brain regions like the amygdala and parahippocampal cortex.

Main Results:

• Anterior cingulate cortex (areas 25, 24) is implicated in visceromotor, skeletomotor, and endocrine control, including responses to pain, maternal behavior, and attention.
• Posterior cingulate cortex (areas 29, 30, 23, 31) is involved in monitoring eye movements, responding to sensory stimuli, and spatial orientation and memory.
• Functional dichotomy observed: anterior cortex for executive control of emotional outflow, posterior cortex for evaluative functions in spatial orientation and memory.

Conclusions:

• The cingulate cortex exhibits a fundamental functional division between its anterior and posterior regions.
• Anterior cingulate cortex primarily supports executive functions related to emotional regulation of bodily systems.
• Posterior cingulate cortex is crucial for evaluative processes supporting spatial orientation and memory functions.