Brodmann area 8

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Brodmann area 8

Brodmann area 8 is a region of the brain that is part of the frontal lobe. It is involved in many functions, including the planning of complex movements, the management of uncertainty, and the control of eye movements.

Anatomy

Brodmann area 8 is located in the anterior part of the frontal lobe, just in front of the premotor cortex. It is divided into three subregions: 8a (anterior), 8b (posterior), and 8c (ventral). Each of these subregions has a different function and a different pattern of connections with other brain areas.

Function

The functions of Brodmann area 8 are diverse and complex. It is involved in the planning and execution of complex movements, especially those that require the coordination of multiple body parts. It is also involved in the management of uncertainty, helping to decide between different possible actions when the outcome is uncertain. Finally, it plays a crucial role in the control of eye movements, especially those that are goal-directed or voluntary.

Clinical significance

Damage to Brodmann area 8 can have serious consequences. It can lead to apraxia, a disorder characterized by the inability to carry out complex movements despite having the physical ability to do so. It can also lead to neglect syndrome, a condition in which the patient ignores one side of their visual field. Finally, it can lead to frontal eye field syndrome, a condition characterized by the inability to voluntarily move the eyes.

See also

• Brodmann area
• Frontal lobe
• Apraxia
• Neglect syndrome
• Frontal eye field