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🧠 Neuroscience
Foundations
Neuroanatomy
Cellular & Molecular Neuroscience
Systems Neuroscience
Cognitive Neuroscience
Computational Neuroscience
Brain-Computer Interface
Neurotech Frontiers
Neuro Disorders
Neurotech Frontiers
Optogenetics — Light-Controlled Neurons
fMRI and BOLD Signal
TMS (Transcranial Magnetic Stimulation)
Deep Brain Stimulation (DBS)
Neuralink — High-Density Invasive BCI
EEG — Scalp Electroencephalography
Calcium Imaging
Transcranial Electrical Stimulation (tDCS / tACS / tRNS)
Focused Ultrasound Neuromodulation
Magnetoencephalography (MEG)
Optogenetics — Advanced & Variants
Functional Near-Infrared Spectroscopy (fNIRS)
Neuropixels — High-Density Silicon Probes
Diffusion Tensor Imaging & Tractography
Chemogenetics / DREADD
Positron Emission Tomography (PET)
Patch Clamp
Brain Organoids
CNS Gene Therapy
Closed-Loop Neuromodulation
Table of Contents
1. Principle
2. Modified Beer-Lambert Law
3. vs fMRI / EEG
4. PyTorch — Dual-Wavelength Hb Solve
5. Advantageous Use Cases
6. Signal Processing
7. Limitations
8. Device Types
9. Relation to AI
10. Common Pitfalls
10.1 fNIRS = Portable fMRI
10.2 Directly Measures Neural Activity
10.3 Fully Motion-Proof
10.4 Signal Purely Brain Source
10.5 Skin Tone/Hair No Effect
11. Related Concepts
References