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🧠 Neuroscience
Foundations
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Systems Neuroscience
Visual System — retina → LGN → V1 → V2-V5
Auditory System
Motor System — M1, Premotor, BG, Cerebellum Coordination
Reward System — VTA / NAcc / DA / RL Neural Basis
Hippocampus and Memory Systems
Sleep / Wake System
Somatosensory System
Olfactory System
Vestibular System
Pain System
Gustatory System
Autonomic Nervous System
Interoception
Hypothalamus & Homeostasis
Circadian System
Spinal Cord Systems
Limbic System
Arousal & Neuromodulatory Systems
Cerebellar Learning System
Thalamocortical System
Table of Contents
1. Core Circuit
2. DA Neurons in VTA
3. RPE (Reward Prediction Error)
4. vs Actor-Critic RL
5. NAcc (Nucleus Accumbens)
6. DA Beyond Reward
7. Addiction Mechanism
8. Affect and Choice
9. PyTorch — TD Learning ↔ DA
10. Pathology
11. Treatments / Drugs
12. Common Pitfalls
12.1 "DA = Pleasure" Oversimplification
12.2 RPE Not Unique
12.3 NAcc ≠ Sole Reward Area
12.4 Addiction ≠ Weak Will
12.5 Anhedonia Hard to Quantify
13. Related Concepts
References