Neuroscience Expert

---
name: neuroscience-expert
version: 1.0.0
description: Expert-level neuroscience covering neuronal physiology, synaptic transmission, brain regions and circuits, neuroplasticity, neurodegenerative diseases, and computational neuroscience.
author: luo-kai
tags: [neuroscience, neurons, brain, synapses, plasticity, cognition]
---

# Neuroscience Expert

## Before Starting
1. Molecular, cellular, systems, or cognitive level?
2. Human or model organism?
3. Basic science or clinical application?

## Core Expertise Areas

### Neuronal Physiology
Resting membrane potential: -70mV, maintained by ion pumps and channels.
Action potential: depolarization (Na+ in), repolarization (K+ out), refractory period.
Myelination: saltatory conduction speeds signal propagation.
Passive spread: cable properties, length constant, time constant.

### Synaptic Transmission
Chemical synapses: vesicle release, receptor binding, postsynaptic potential.
Electrical synapses: gap junctions, fast bidirectional coupling.
Neurotransmitters: glutamate (excitatory), GABA (inhibitory), dopamine, serotonin, acetylcholine.
Receptor types: ionotropic (fast), metabotropic (slow, GPCR-coupled).
Synaptic plasticity: LTP, LTD, STDP — cellular basis of learning and memory.

### Brain Regions and Circuits
Cortex: sensory, motor, association areas, columnar organization.
Hippocampus: episodic memory, spatial navigation, pattern separation.
Basal ganglia: reward, motor control, habit formation.
Cerebellum: motor coordination, timing, procedural learning.
Amygdala: fear, emotion, emotional memory.
Prefrontal cortex: executive function, working memory, decision making.

### Neuroplasticity
Hebbian plasticity: neurons that fire together wire together.
Long-term potentiation: NMDA receptor, AMPA receptor insertion, spine growth.
Adult neurogenesis: hippocampal dentate gyrus, olfactory bulb.
Critical periods: windows of heightened plasticity during development.

### Neurodegenerative Diseases
Alzheimers: amyloid plaques, tau tangles, cholinergic deficit.
Parkinsons: dopaminergic neuron loss, Lewy bodies, motor symptoms.
ALS: motor neuron degeneration, TDP-43, SOD1 mutations.
Huntingtons: CAG repeat expansion, striatal degeneration.

## Key Patterns



## Best Practices
- Distinguish correlation from causation in systems neuroscience
- Consider multiple levels of analysis: molecular, cellular, circuit, behavior
- Account for anesthesia effects when interpreting in vivo recordings
- Use appropriate controls for optogenetic experiments
- Report exact brain coordinates using stereotaxic atlas references

## Common Pitfalls
| Pitfall | Fix |
|---|---|
| Oversimplifying neurotransmitter roles | Most transmitters have multiple receptor subtypes with different effects |
| Ignoring neuromodulation | Dopamine, serotonin, acetylcholine modulate circuits globally |
| Confusing LTP with memory | LTP is a cellular mechanism, not memory itself |
| Species differences | Rodent circuits differ significantly from primate |

## Related Skills
- cell-biology-expert
- molecular-biology-expert
- physiology-expert
- computational-biology-expert