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Neural Mechanisms of Behavior

Neural Mechanisms of Behavior. ZOL 313, May 20 2008. Neural Mechanisms of Behavior. Objectives: Understand how neurons and simple neural networks function to influence animal behaviors. 2. Identify examples of stimulus filtering and be able to explain why it is biologically important.

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Neural Mechanisms of Behavior

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  1. Neural Mechanisms of Behavior ZOL 313, May 20 2008

  2. Neural Mechanisms of Behavior • Objectives: • Understand how neurons and simple neural networks function to influence animal behaviors. • 2. Identify examples of stimulus filtering and be able to explain why it is biologically important. • 3. Become familiar with some of the proximate mechanisms underlying animal navigation. ZOL 313, May 20 2008

  3. Neurons Caenorhabditis elegans (worm): 302 Fruit fly: 300,000 Humans: 100,000,000,000

  4. Neural Networks

  5. Neural network example:moth detection of bat ultrasound

  6. Central Pattern Generators Example: Sea slug escape behavior

  7. Stimulus filtering Auditory SF Example Cricket auditory receptors

  8. Tactile stimulus filtering example: Cortical magnification in the star-nosed mole (Eimer’s organ)

  9. Cortical magnification continued: sensory analysis

  10. Visual stimulus filtering example: UV vision in birds & insects Experiment:

  11. Neural network location and function in humans Face recognition: posterior fusiform gyrus Navigation:right hippocampus

  12. Neural mechanisms of navigation in animals In order to know where to go, animal brains need: 1. 2. Examples of cues animals can use:

  13. Example: How do homing pigeons know where to go? Experiment 1: Experiment 2:

  14. Example: how do sea turtles know where to go? Experiment:

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