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Understanding Nerve Cells and Stimuli Processing in Animals

Explore the mechanisms of nerve cells, action potential, and sensory receptors in different animal species. Learn about synaptic junctions, chemoreceptors, and how stimuli influence behavior through case studies like the tail flip response in crayfish.

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Understanding Nerve Cells and Stimuli Processing in Animals

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  1. Nerves and Stimuli

  2. Nerve Cells

  3. Action Potential

  4. Synaptic Junctions

  5. Chemoreceptors Hamster - taste bud Moth antenna

  6. Mechano- and chemoreceptors

  7. Thermoreceptors

  8. Photoreceptors Photosensitive cells - Planaria Compound eye - Arthropods

  9. Nerve cells, stimuli and behaviour Tail flip response in crayfish

  10. Tail flip response in crayfish Lateral Giant interneuron (LGI)

  11. a. Correlation between nerve firing and response Tail flip Recording electrode LGI Stimulating electrode Tactile stimulation b. LGL is sufficent for response Tail flip Recording electrode LGI Stimulating electrode Tactile stimulation c. Hyperpolarizing nerve Recording electrode No tail flip LGI Stimulating electrode Tactile stimulation

  12. Peripheral Processing of Stimuli Worm-catching Toads

  13. Central Processing Optic Tectum of a Toad

  14. Central Pattern Generators (Motor Pattern Generators)

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