See It · Nervous Tissue

Neuron Lab

Make a neuron fire, break it on purpose, and match each channel to its moment. Nothing here is graded.

Relaxed mode (slower time)

Fire one:

Fire together:

E = excitatory synapse (+, makes an EPSP) I = inhibitory synapse (−, makes an IPSP) Threshold −55 mV Voltage at the axon hillock

Your goal

How to play

Click or tap a synapse knob, or press its number key (1, 2…), to fire it.
Tick boxes under the picture, then press Fire together to fire several at the same moment.
Watch the trace at the bottom. Reach −55 mV at the axon hillock and the neuron fires.
Time is slowed way down.

Stars

3 stars: solved with no hint in one or two tries. 2 stars: any other solve. 1 star: solved after watching a solution.

1. Which part of the process is affected?

2. What happens to signaling?

Wrong answers are fine here. Read why, then try again.

Show phase names Relaxed mode (timer hidden) 0:00

Inside the membrane right now

Dr. Akash Garg · See It: Anatomy & Physiology · Chapter 12, Nervous Tissue (OpenStax A&P 2e) · Pair with the Action Potential Walkthrough.
Diagrams are simplified and not to scale. Voltages and timing are rounded textbook values, and time in the game is slowed down a lot.