Introduction to Neuroscience
Last revised 9/21/2026

Introduction to Neuroscience

From ion gradients to memory, one short piece at a time

This course follows the nervous system from the biophysics of a single membrane to the systems that produce behaviour. It covers how neurons hold a resting voltage, fire, and signal to one another; how each sense converts physical or chemical energy into a neural code and maps it onto the brain; how movement is organised from reflex to cortex; how hormones and modulatory systems set the gain on motivation and emotion; and how activity reshapes synapses during development and learning. We compress the ground a full textbook covers and reorganise it into short, self-contained pieces, so you can work through the mechanism you need without reading a chapter around it. By the end you can trace a stimulus into a spike train, follow it to the cortex, and say what a described deficit tells you about the circuit behind it.

PrimerCourse Companion
Earn11CreditsinNeuroscience
8Modules63Sessions

Modules in this Collection’s System

Coming soon

The Excitable Neuron

How a single cell builds a voltage, and how that voltage becomes a travelling signal.

8Sessions
Coming soon

How Neurons Communicate

Synapses, transmitter chemistry, and the layout that all of it sits inside.

7Sessions
Coming soon

Taste, Smell, and Vision

The senses that read chemistry and light, and the cortical machinery that interprets them.

8Sessions
Coming soon

Hearing, Balance, and the Body Senses

Sound, balance, touch, pain, and temperature, and the pathways that carry each one.

8Sessions
Coming soon

The Motor System

From a single motor neuron to the circuits that plan, start, and correct a movement.

8Sessions
Coming soon

Chemical Control of Motivation and Emotion

Hormones, autonomic output, and neuromodulators as the chemistry under behaviour.

8Sessions
Coming soon

Brain States, Cognition, and Disorder

Sleep, language, attention, and consciousness, and what happens when these circuits fail.

8Sessions
Coming soon

Development, Memory, and Plasticity

How experience leaves a physical trace, from wiring a brain to storing a memory.

8Sessions
Coming soon

What You'll Walk Away With

  • 4mental models that connect voltage, spikes, synaptic strength, and sensation into one chain
  • 6circuit diagrams of sensory, motor, and modulatory pathways you can redraw from memory
  • 3comparison tables that separate signalling modes, memory types, and brain-imaging methods
  • 5clinical signposts that link a described symptom to the circuit that would explain it

You'll Have Answers To

  • ?How does a cell made of salt water and protein manage to hold a voltage across its membrane?
  • ?Why can the same brief change in voltage carry touch, light, and sound?
  • ?Where does a memory actually live, and what physically changes there?
  • ?Why do some abilities have a window that closes, and what closes it?
  • ?When a circuit fails, what does the resulting symptom tell you about what that circuit was doing?

Critical Concepts Explored

resting membrane potentialaction potentialsynaptic integrationtransmitter-gated ion channelreceptive fieldtonotopy and place codingmotor unitdiffuse modulatory systemlong-term potentiationcritical period
Editor's Note
A patient, diagram-driven route from membrane voltage to memory.

The sequence never asks you to take a mechanism on authority: each claim arrives with the evidence that produced it, and the clinical asides keep the abstraction anchored. It is a demanding course, but the short format means you can absorb it in the order your curiosity dictates.

Editor's Brief
Who it's for
Learners teaching themselves the neuroscience of a first university course, without a timetable or a lab.
What stands out
The compression is aggressive for a subject this visual: 63 short pieces carry the whole arc from ion gradients to memory, and each one stands on its own.
Read if
Read this if you want the rigour of a university textbook without the semester-shaped padding wrapped around it.
Gold Quotes
Every sensation you have ever had began as a change in membrane voltage, because the brain has no other way in.

Sensory receptors differ in what they detect but not in what they produce: a graded change in the voltage across a cell membrane. The variety of experience comes from where those cells send their axons, not from a variety of signals.

About the Curator
NNano College

Nano College takes the standard university textbook for a course and turns it into short, self-contained pieces you can actually finish. We keep the ground the textbook covers and the rigour it insists on; what we leave out is the padding that only exists to fill a semester.

Introduction to Neuroscience | LearningFirst