Frontale lobe
15 important questions on Frontale lobe
Connections pre-motor cortex
- Pre motor area (lateral) and SMA (medial). Function: selection of movements.
- FEF and suppl. eye fields. It is important for eye movements. It receives visual input from posterior parietal areas and sends information to those areas.
- All premotor areas receive input from the dorsolateral PFC.
Connections inferior frontal area
Function premotor cortex
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Function supply. eye field
Consequences of primary motor disturbance (pirmary projections area)
- Decline in fine motor activity
- Speed, force of the movement
- Hemiparesis + spasticity
- Disturbance contralateral the lesion
Function lateral corticospinal tract
Function ventral corticospinal tract
Consequences secondary motor disturbance (premotor + SMA)
- Disturbance in the fluency of the movement
- Disturbance contralateral
- Visual scanning
Function secondary motor area
- Strong connection with the subcortical areas
- Correct sequence of movements
Function dorsolateral PFC
Function medial PFC
Location supplementary motor cortex
What are the four frontal-lobe damage features?
- Low output
- Rule breaking
- Shaky script
- Perserveration
Which pathway is affected by addictive drugs?
Symptoms of frontal lobe lesions
- Disturbance of motor functions
- Loss of divergent thinking
- Impaired response inhibition and inflexible behavior
- Poor temporal memory
- Impaired social and sexual behavior
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