Summary
The cerebellum fine-tunes movement and learns skills through error-based correction.
In depth
Contains over half of the brain's neurons. Purkinje cells integrate inputs; climbing fibres signal errors, driving plasticity. It adjusts timing and accuracy of movement, such as in catching a ball.
The cerebellum compares intended and actual movement. Damage causes unsteady movement without paralysis. It also contributes to cognition.
Example: learning to ride a bike involves cerebellar adaptation.
The cerebellum has a uniform cortical structure: granule cells (about 50 billion, more than all the rest of the brain), Purkinje cells that provide the only output from the cortex (inhibitory), and mossy and climbing fibre inputs. Marr and Albus and Ito proposed that climbing fibre error signals induce long-term depression at parallel fibre-Purkinje cell synapses, which tunes movement. Cerebellar damage causes ataxia (uncoordinated gait), dysmetria, intention tremor and slurred speech, but not paralysis.
The vestibulo-ocular reflex and eyeblink conditioning are classic learning models. The cerebellum also contributes to timing, language, attention and emotional regulation (cerebellar cognitive affective syndrome). Alcohol affects the cerebellum, causing unsteady walking. Forward models predict sensory consequences of actions, which explains why you cannot tickle yourself.
Remember: the cerebellum fine-tunes movements, instead of starting them.
Frequently asked questions
What is Cerebellum and Motor Learning?
The cerebellum fine-tunes movement and learns skills through error-based correction.
Which area of biology covers Cerebellum and Motor Learning, and how advanced is it?
Cerebellum and Motor Learning is one of the 54 topics in Neuroscience. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Basal Ganglia, Nervous System, Brain-Machine Interfaces.
Can you give an example of Cerebellum and Motor Learning?
Cerebellar damage causes ataxia and intention tremor.
What should I learn before Cerebellum and Motor Learning?
Work through the Beginner topics in Neuroscience first, such as Nervous System, Neuron, Central and Peripheral Nervous Systems, then return to Cerebellum and Motor Learning. Advanced topics assume the Intermediate vocabulary.
What topics are related to Cerebellum and Motor Learning?
The closest topics to Cerebellum and Motor Learning are Basal Ganglia, Nervous System, Brain-Machine Interfaces, Spinal Cord Functions. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Cerebellum and Motor Learning?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Cerebellum and Motor Learning. To practise the whole of Neuroscience, use the Neuroscience quiz.
How is Cerebellum and Motor Learning different from Basal Ganglia?
Cerebellum and Motor Learning: The cerebellum fine-tunes movement and learns skills through error-based correction. Basal Ganglia: Deep nuclei that select and initiate actions, disrupted in Parkinson's and Huntington's diseases. Read both side by side and note what each one explains.
How should I study Cerebellum and Motor Learning step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Basal Ganglia and explain the difference aloud. Finally, take the Neuroscience quiz and come back to this page for any question you miss.