Summary
Dopamine circuits mediate reward, motivation and movement; loss of its neurons causes Parkinson's disease.
In depth
Nigrostriatal (movement; loss causes Parkinson's), mesolimbic (reward and addiction) and mesocortical (cognition). Drugs of abuse such as cocaine and amphetamine raise dopamine. Dopamine encodes reward prediction error.
Dopamine neurons fire in response to unexpected rewards. Excess dopamine activity in mesolimbic pathways is linked to psychosis.
Example: addictive drugs hijack the reward system.
Frequently asked questions
What is Dopamine Pathways?
Dopamine circuits mediate reward, motivation and movement; loss of its neurons causes Parkinson's disease.
Which area of biology covers Dopamine Pathways, and how advanced is it?
Dopamine Pathways is one of the 54 topics in Neuroscience. It is rated Intermediate, so it suits learners who already know the core vocabulary. Related topics in this area include Basal Ganglia, Cerebellum and Motor Learning, Neurotransmitters.
Can you give an example of Dopamine Pathways?
L-DOPA is a precursor used to treat Parkinson's.
What should I learn before Dopamine Pathways?
Work through the Beginner topics in Neuroscience first, such as Nervous System, Neuron, Central and Peripheral Nervous Systems, then return to Dopamine Pathways. Intermediate topics assume the Beginner vocabulary.
What topics are related to Dopamine Pathways?
The closest topics to Dopamine Pathways are Basal Ganglia, Cerebellum and Motor Learning, Neurotransmitters, Neural Circuits and Oscillations. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Dopamine Pathways?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Dopamine Pathways. To practise the whole of Neuroscience, use the Neuroscience quiz.
How is Dopamine Pathways different from Basal Ganglia?
Dopamine Pathways: Dopamine circuits mediate reward, motivation and movement; loss of its neurons causes Parkinson's disease. 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 Dopamine Pathways 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.