Free About 1 hr0 learners Rev. 2026-10-28 0

A dentist's numbing shot and the poison of a pufferfish do the same thing: they jam one tiny protein gate in the wall of a nerve cell. Your brain runs on billions of gates like it, opening and closing in thousandths of a second, and almost everything you feel, decide and remember depends on their timing. Neuroscience is the study of how that wet, salty, electrical machinery adds up to a mind, and of what happens when it goes wrong.

You will trace a signal from a single cell to a whole act of seeing or reaching, find out why antidepressants take weeks and why caffeine only hides tiredness, and learn why a dead fish once showed "brain activity" in a scanner. That last story is the practical payoff. Brain science now shows up in headlines, advertising, courtrooms and privacy law, and by the end you will be able to ask the questions that separate a real finding from a glowing picture, while keeping in view that a brain scan never captures the whole person.

Levels

  1. 1 1. Neurons and the Nerve Impulse 5-question quiz
  2. 2 2. Synapses, Neurotransmitters and Drugs 5-question quiz
  3. 3 3. The Brain's Parts and What They Do 5-question quiz
  4. 4 4. How We Study the Brain 5-question quiz
  5. 5 5. Senses and Movement 5-question quiz
  6. 6 6. Plasticity and the Developing Brain 5-question quiz
  7. 7 7. Sleep, Reward and Addiction 5-question quiz
  8. 8 8. Brain Disorders and Neuroethics 5-question quiz

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