Neuro model: Eye and Ear System

Eye and EAR Neuro models package with the NMD-EAR, NMD-EYE and Spike Sorting Analysis Module

In the classroom, it is not easy to determine how the eye and ear works. We can use an eye chart or tuning forks, but that only tells us so much. Using models connected to a computer interface can actually allow us to see the action potentials generated by the eye and the ear based on what colors there are “seeing” and sounds they are “hearing”.

NMD-EAR

A microphone listens to the audio
The audio is broken down into 8 different frequency bands
Depending of the power in the different bands, different nerve cells will fire an action potential

Each cell’s action potential is different. The recorded spikes can be sorted to analyze which nerve cells were active

Spikes in response to different music concerts: Mozart: Flute Concerto No. 2, Tchaikovsky – 1812 Overture end, and Fur Elise

SpikesHistogram to different music concerts: Mozart: Flute Concerto No. 2, Tchaikovsky – 1812 Overture end, and Fur Elise

Spikes in response to different frequencies

NMD-EYE

Stimulate

• 3 color photo receptors (red, green and blue) in the eye.
• 4 light intensity photo receptor in the eye.

Each photo receptor will generate an action potential that can be recorded.

Different photo receptor produce different spikes.

Example Data:

LS-SPIKE

Spike Sorting Analysis module for LabScribe