Functions of Cerebral Lobes
Rahul's Noteblog
Notes on Neurology
Notes on Functions and Diseases of Cerebrum
Functions of Cerebral Lobes
FUNCTIONS OF CEREBRAL LOBES:
Frontal lobe:
1. Voluntary motory control of skeletal muscle (motory cortex).
2. Personality.
3. Verbal communication/language.
Parietal lobe:
1. Sensory or somatesthetic interpretation: post-central gyrus.
2. Understanding speech; word formulation; thought expression.
3. Expression of emotions.
4. Interpretation of textures and shapes.
Temporal lobe:
1. Analysis and interpretation of auditory sensation.
2. Memory; auditory and visual experience.
Occipital lobe:
1. Eye: movement integration and focus.
2. Conscious perception of vision.
3. Correlation of previous visual experiences.
Insula:
• Memory: other integrative function.
• Functional Cortical localization: Important Zones after Brodmann (Cytoarchitectoral zones).
1. Parietal lobe:
Primary somatic sensory area (areas 3, 1, 2): postcentral gyrus - somatotropic representation and mapping (sensory homunculus) of body on the lateral and medial surface of the hemisphere. Posterior to this zone is the general sensory association area. Receives sensation from the contralateral side of the body.
2. Occipital lobe:
Striate cortex: Visual area (area 17) calcarine sulcus. Also visual association cortex (area 18, 19).
3. Temporal lobe:
Auditory area: (area 41, 42) superior surface of temporal lobe/gyrus. Also auditory association cortex (area 22).
4. Taste area:
Postcentral gyrus in lateral fissure/insula area.
5. Frontal lobe:
Primary motor area (area 4) precentral gyrus. Anterior lies the premotor area. Gives rise to 80% of the corticospinal (pyramidal) tract. Also premotor cortex (area 6) ie cell bodies of the primary motor pathways.
6. Motor speech area (Broca's area 44):
Frontal lobe anteriorly above lateral fissure at the posterior end of the inferior frontal gyrus. Damage to this area results in motor aphasia.
7. Sensory speech area:
Parietal and temporal lobes (C-shaped) close to the auditory association cortex - at the posterior aspect of the lateral sulcus.
Chapters on Cerebrum:
1. Anatomy of Cerebral Hemispheres
2. Functions of the Brain and Homunculus
3. Notes on Brodmann Areas
4. Cerebral Association and Commissural Fibres
5. Notes on CNS Functional Integration
6. Functions of Cerebral Lobes
7. Anatomy of the Inferior Cerebrum
8. Notes on Internal Capsule
9. Introduction to Cerebrum
10. Laminar Structure of Neocortex
11. Medial Cerebral Hemisphere
12. Notes on Cerebral Motor Axis
13. Notes on Somatic Sensory Axis
14. Specific Cerebral Cortical Functions
15. Surface of Cerebral Hemispheres
Additional Reading:
Basic Neurology
1. Peripheral Nervous System
2. Central Nervous System
3. The Ventricular System
4. The Spinal Cord
5. The Brain Stem
6. The Cerebellum
7. Visual Pathways
8. Diencephalon
9. Basal Ganglia
10. Cerebral Cortex
11. Sleep Disorders
12. Autonomic Nervous System
13. Cranial Nerves and Parasympathetic Ganglia
14. Cells of the Nervous System
15. Cerebrospinal fluid
16. Additional short notes on Cerebrum
17. Functions and Diseases of Cerebrum
18. Subcortical Grey Matter
19. Notes on The Spinal Cord
20. Regulation of Heart Rate by Autonomic Nervous System
21. Action Potentials, Axon Conduction, and Neuromuscular Junction
22. Types of Seizures
Neurology Videos
1. Video of Neurology Examination in a Clinical Setting
Medical Images
Useful Medical Images & Diagrams (link opens in a new window)
Related Topics
1. Nervous System Disorders
2. Histology of Nervous Tissue
3. Cranial Nerve Reflexes
4. Motor System Examination
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