lecture cerebellum

Question 1

Metencephalon/ Hindbrain

Answer 1

-cerebellum and pons

Question 2

Peduncles

Answer 2

• regulate input and output from/to cerebellum
• superior: efferent -> largest output structure, regulating limbic movements
• middle: affarent -> largest portion, regulates input from proprioception, visual, auditory and tactile info processing
• inferior: mostly affarent -> proprioception, where u are, how different body parts relate to each other while moving

Question 3

What info does the cerebellum receive?

Answer 3

• somatosensory
• visual
• auditory
• vestibular
• proprioceptive

Question 4

Functions cerebellum

Answer 4

• coordination, fine tuning (timing), unconscious planning of motor behavior
• learning of motor behavior:
• > implicit learning, procedural memory
• > details of automatic motor plans are stored that are not influenced by explicit motor plans of cortex
• cognition, emotion
• > function unclear but engagement in speech production/perception and emotion processing is noted

Question 5

Cerebellar dysfunctions - different forms of ataxia

Answer 5

• dysfunctions of motor coordination
• Nystagmus (eye fluctuations)
• Truncal ataxia (inability to stand or sit upright)
• Gait ataxia (drunken sailer walk)
• Dysmetria (hand reaches out but misses the goal)
• Tremor
• Slurred, imprecise speech
• dysfluent walking