Tag
#neuroscience
5 articles
The Synapse: How Neurons Talk
Why the spike can't jump the gap, how a chemical synapse relays it step by step, and why the receiving neuron sums many excitatory and inhibitory inputs before deciding to fire.
Vision: How the Eye Works
The eye focuses a real, inverted image onto a retina that is sharp only in a tiny central spot and blind where the nerve leaves — and the brain reconstructs the vivid, uniform world you think you see.
How We Hear
How the ear takes one jumbled pressure wave and physically pulls it apart into pure frequencies — a biological Fourier transform curled up inside your head.
Anesthesia: Switching Off Pain and Consciousness
Local anesthetics block the sodium channels that carry the action potential; general anesthesia is a drug-induced state distinct from sleep whose mechanism remains unknown — and both live or die by keeping the concentration in a narrow window.
The Action Potential
The voltage spike that carries information through your nervous system, from ion channels to ECG.