Definition:
 – Brodmann areas are regions of the cerebral cortex defined by differences in their cellular (cytoarchitectural) structure.
 – Devised by German anatomist Korbinian Brodmann in 1909, his system originally identified 52 distinct areas.

Key Points & Examples:
• Purpose:
 – The classification helps link specific cortical regions with functional roles (e.g., sensation, motor control, vision, language).
 – It remains widely used in neuroimaging and brain mapping despite later refinements

Brodmann Area 1
• Primary somatosensory cortex (part of the postcentral gyrus; processes tactile information such as touch and proprioception).
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Brodmann Area 2
• Primary somatosensory cortex (further processes touch, pressure, and proprioceptive input).
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Brodmann Area 3
• Primary somatosensory cortex (often subdivided into 3a and 3b; receives initial sensory input).
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Brodmann Area 4
• Primary motor cortex (located on the precentral gyrus; responsible for executing voluntary movements).
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Brodmann Area 5
• Somatosensory association cortex (integrates sensory input to contribute to spatial perception and motor planning).
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Brodmann Area 6
• Premotor and supplementary motor cortex (involved in motor planning, sequencing, and coordination).
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Brodmann Area 7
• Somatosensory association cortex (supports visuomotor integration and spatial orientation).
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Brodmann Area 8
• Frontal eye fields (controls voluntary eye movements and visual attention).
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Brodmann Area 9
• Dorsolateral prefrontal cortex (key in working memory, decision making, and executive functions).
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Brodmann Area 10
• Anterior prefrontal cortex (involved in complex cognitive processes, planning, and memory retrieval).
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Brodmann Area 11
• Orbitofrontal cortex (associated with decision making, reward processing, and emotional regulation).
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Brodmann Area 12
• Orbitofrontal cortex (functions similar to BA11 in affective and decision processes).
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Brodmann Area 13
• Insular cortex (involved in interoceptive awareness, taste, and aspects of emotion).
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Brodmann Area 14
• Insular cortex (often grouped with BA13; supports similar functions).
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Brodmann Area 15
• Anterior temporal region (less clearly defined in humans; sometimes noted as part of temporal association areas).
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Brodmann Area 16
• Insular cortex (more prominent in some non‐human primate studies).
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Brodmann Area 17
• Primary visual cortex (V1; processes fundamental visual information such as edges and orientation).
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Brodmann Area 18
• Secondary visual cortex (V2; handles early-stage visual processing and integration).
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Brodmann Area 19
• Associative visual cortex (involved in higher-level visual processing, including color and motion).
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Brodmann Area 20
• Inferior temporal gyrus (important for object recognition and visual memory).
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Brodmann Area 21
• Middle temporal gyrus (participates in processing complex visual stimuli and semantic information).
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Brodmann Area 22
• Superior temporal gyrus (includes parts of Wernicke’s area; crucial for language comprehension).
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Brodmann Area 23
• Ventral posterior cingulate cortex (associated with memory, emotion, and self-referential processing).
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Brodmann Area 24
• Ventral anterior cingulate cortex (involved in emotional regulation and autonomic functions).
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Brodmann Area 25
• Subgenual area (linked to mood regulation and frequently implicated in depression).
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Brodmann Area 26
• Ectosplenial portion of the retrosplenial cortex (its specific function is less distinct, but it may play a role in memory and spatial navigation).
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Brodmann Area 27
• Piriform cortex (primary olfactory cortex; processes smell).
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Brodmann Area 28
• Ventral entorhinal cortex (involved in olfactory processing and memory functions).
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Brodmann Area 29
• Retrosplenial cortex (contributes to episodic memory and spatial navigation).
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Brodmann Area 30
• Part of the cingulate cortex (may serve integrative roles between emotional and cognitive processes).
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Brodmann Area 31
• Dorsal posterior cingulate cortex (associated with attention and aspects of cognitive processing).
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Brodmann Area 32
• Dorsal anterior cingulate cortex (involved in conflict monitoring and executive control).
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Brodmann Area 33
• Part of the anterior cingulate cortex (its specific function is less clearly defined).
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Brodmann Area 34
• Dorsal (or anterior) entorhinal cortex (plays a role in memory encoding and spatial navigation).
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Brodmann Area 35
• Perirhinal cortex (critical for object recognition and memory formation).
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Brodmann Area 36
• Ectorhinal area (considered part of the perirhinal complex; involved in memory processes).
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Brodmann Area 37
• Fusiform gyrus (essential for high-level visual processing, including face and object recognition).
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Brodmann Area 38
• Temporopolar area (associated with semantic processing, social cognition, and emotional interpretation).
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Brodmann Area 39
• Angular gyrus (involved in language, number processing, and spatial cognition; part of Wernicke’s network).
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Brodmann Area 40
• Supramarginal gyrus (contributes to language perception and spatial awareness).
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Brodmann Area 41
• Primary auditory cortex (processes basic auditory information, including pitch and volume).
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Brodmann Area 42
• Secondary auditory cortex (further refines auditory processing).
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Brodmann Area 43
• Primary gustatory cortex (responsible for taste perception).
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Brodmann Area 44
• Pars opercularis (part of Broca’s area; crucial for speech production).
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Brodmann Area 45
• Pars triangularis (also part of Broca’s area; involved in language processing).
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Brodmann Area 46
• Dorsolateral prefrontal cortex (supports executive functions, working memory, and attention).
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Brodmann Area 47
• Pars orbitalis (located on the inferior frontal gyrus; involved in semantic processing).
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Brodmann Area 48
• Retrosubicular area (its specific function is not clearly established).
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Brodmann Area 49
• Parasubicular area (mainly described in rodents; not a prominent region in human cortical mapping).
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Brodmann Area 50
• Not commonly defined or used in standard human cortical maps.
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Brodmann Area 51
• Often not referenced in human studies; sometimes considered part of adjoining regions (e.g., piriform area).
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Brodmann Area 52
• Parainsular area (thought to contribute to the integration of sensory information and aspects of attention).

 Historical & Scientific Significance:
 – Brodmann’s map was a pioneering attempt to systematically subdivide the cortex based on microscopic anatomy.
 – Although modern techniques have refined these borders, his numbering still serves as a standard reference in both research and clinical practice