<p>A three-part HarvardX series introducing the structure and function of the nervous system, from the electrical behaviour of a single neuron to the complexity of the brain. The courses are self-paced and run on edX; audit access is free, with a verified HarvardX certificate available for a fee.</p><ul><li>Part 1 covers the electrical properties of neurons and how individual cells transmit information.</li><li>Part 2 covers neurons and networks — how signals pass between cells and give rise to circuit dynamics.</li><li>Part 3 covers the brain, its regions and higher-level function.</li><li>Introductory level; includes interactive simulations and DIY neuroscience experiments.</li><li>Roughly 3–5 hours of study per week, self-paced across each part.</li></ul><p>Enrol through edX to begin the series at any time.</p>