Download presentation
Presentation is loading. Please wait.
Published byCamron Blake Modified over 8 years ago
1
Lab One: A beginner’s guide to the spikerbox
2
Brain Cells need to communicate with each other to control the body A brain with only one neuron is not a brain A brain is a network (friendship) of neurons
3
How do neurons talk? Method 1: Chemical communication e.g. Bacteria Con: slow, limited by diffusion
4
How do neurons talk? Method 2: Chemical communication through synapse e.g. stretching the neuron to cover more space Con: still slow, signal must travel long way through cell
5
How do neurons talk? Method 3: Electrical and chemical combination Electricity carries signal quickly down long axon to synapse, chemical transmission at synapse to the next neuron
6
Electrical Neural Communication: The Action Potential Action potentials (“spikes”) are generated by Na infusion depolarizing the cell membrane and K expulsion repolarizing it. Spike “moves” as depolarization propagates down axon
7
Wikipedia.org Anatomy of the Neuron
8
Model of the nervous system: Discoid cocroach (Blaberus discoidalis)
9
Neuroanatomy of Cockroach
10
Neuroanatomy of Cockroach Leg
11
Procedures: Put the cockroach in a jar of ice water
12
Procedures: Cut off one of roach’s legs near the body (Put petroleum jelly on exposed wound on body and leg, return cockroach to house, leg will grow back if cockroach not full grown adult)
13
Procedures: Place leg on cork of SpiderBox, with a bit of leg overhang
14
Procedures: Put one electrode in the femur and the other in the coxa
15
Procedures: Observe the spike trains, demonstrating neuron communication
16
Classify spikes by amplitude: binning
17
Entering Your Data
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.