Detailed Analysis of Brain Cortical Regions

This analysis is based on current neuroanatomical research and clinical studies. For more detailed information about the cerebral cortex structure and function, please visit the NIH National Library of Medicine's comprehensive guide on Neuroanatomy, Cerebral Cortex .

Temporal Lobe Regions

  • Bankssts (Banks of Superior Temporal Sulcus)
    Involved in social cognition (understanding others' intentions, gaze tracking) and language processing.
  • Superior Temporal
    Contains primary auditory cortex and Wernicke's area, responsible for sound processing and language comprehension.
  • Middle Temporal
    Associated with semantic memory, language integration, and motion perception (e.g., determining object motion direction).
  • Inferior Temporal
    Responsible for high-level visual processing, including object recognition and complex shape analysis.
  • Fusiform
    Contains the Fusiform Face Area (FFA), specialized in face recognition and text processing.
  • Temporal Pole
    Integrates emotion and memory, crucial for social cognition and episodic memory recall.
  • Transverse Temporal (Heschl's Gyrus)
    Primary auditory cortex, directly receives auditory signals from the ears.
  • Parahippocampal
    Links hippocampus with cortex, crucial for episodic memory encoding and spatial navigation.

Frontal Lobe Regions

  • Superior Frontal
    Controls executive functions, including planning, decision-making, and attention maintenance.
  • Rostral Middle Frontal
    Involved in cognitive flexibility, task switching, and abstract reasoning.
  • Caudal Middle Frontal
    Associated with working memory and spatial attention.
  • Medial Orbitofrontal
    Evaluates reward value, moral decision-making, and emotion regulation, including regret processing.
  • Lateral Orbitofrontal
    Involved in risk assessment, inhibitory control, and social behavior regulation.
  • Frontal Pole
    Anterior-most part of frontal lobe, responsible for metacognition and long-term goal planning.
  • Pars Triangularis
    Part of Broca's area, dominant in language production and grammar processing.
  • Pars Opercularis
    Related to language motor planning, also part of Broca's area.
  • Pars Orbitalis
    Regulates emotional responses, olfactory processing, and impulse control.

Parietal Lobe Regions

  • Superior Parietal
    Integrates visual and somatosensory information, responsible for spatial orientation and attention allocation.
  • Inferior Parietal
    Includes angular and supramarginal gyri, involved in language comprehension, mathematical ability, and multimodal perception.
  • Supramarginal
    Supports phonological working memory, reading, and tool-use related action simulation.
  • Postcentral
    Primary somatosensory cortex, processes touch, temperature, and pain sensations.
  • Paracentral
    Extends across central sulcus, controls lower limb movement and sensation, including bladder function.

Occipital and Visual Regions

  • Cuneus
    Processes visual information from upper visual field, involved in color and shape recognition.
  • Lingual
    Processes lower visual field input, associated with scene memory and text recognition.
  • Pericalcarine
    Primary visual cortex (V1), receives raw visual signals from retina.
  • Lateral Occipital
    Responsible for object recognition, particularly sensitive to complex shapes.

Limbic System and Cingulate

  • Caudal Anterior Cingulate
    Regulates emotional responses and autonomic functions.
  • Rostral Anterior Cingulate
    Monitors cognitive conflict and error detection, as in Stroop task response inhibition.
  • Posterior Cingulate
    Core region of default mode network, involved in self-referential thinking and episodic memory.
  • Isthmus Cingulate
    Links posterior cingulate with parahippocampal regions, supports memory consolidation.

Other Key Structures

  • Corpus Callosum
    Largest white matter tract connecting hemispheres, enables interhemispheric communication.
  • Insula
    Processes interoception, pain perception, and social emotions (empathy, disgust).
  • Precentral
    Primary motor cortex, controls contralateral voluntary movements.
  • Precuneus
    Highly active during rest, involved in self-awareness and episodic memory retrieval.
  • Entorhinal
    Major input to hippocampus, contains grid cells for spatial memory formation.