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

It receives input from temporale lobe and projects to amygdala and hypothalamus

Function premotor cortex

Involved in action as a response to environment cue
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Function supply. eye field

Internal driven actions

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

Moves limb and digits

Function ventral corticospinal tract

Moves muscles of midline of the body

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

Planning, executing, and controlling of mental activities. It is goal oriented and in the correct sequence (temporal).

Function medial PFC

Iniating and maintaining goal-oriented activities. In case of lesion: loss of initiative and apathy.

Location supplementary motor cortex

Premotorcortex

What are the four frontal-lobe damage features?

  1. Low output
  2. Rule breaking
  3. Shaky script
  4. Perserveration

Which pathway is affected by addictive drugs?

The mesolimbic DA pathway

Symptoms of frontal lobe lesions

  1. Disturbance of motor functions
  2. Loss of divergent thinking
  3. Impaired response inhibition and inflexible behavior
  4. Poor temporal memory
  5. Impaired social and sexual behavior

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