L12 sensory intro post - Sensory Systems By the end of...

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By the end of class today, you should be able to: Design a simple experiment to determine the stimulus modality of a sensory receptor Explain how the brain is able to interpret sensory signals encoded as action potentials to extract information about stimulus modality, location, intensity, and duration Analyze experimental data to determine whether a receptor is tonically or phasically active Sensory Systems Tuesday, February 24, 2015
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What has to happen for you to be able to take in sensory information from your surroundings? Classification of sensory receptors Tuesday, February 24, 2015
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Sensory systems allow animals to monitor their internal and external environments Steps in sensory perception: 1. Sensory receptor detects signal 2. Transduce signals into a form that can be interpreted 3. Amplifies signals (maybe) 4. Signal sent to an integrating centre (e.g. brain) Tuesday, February 24, 2015
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Sensory Receptors Sensory neurons in skin Figure 6.13 Figure 6.37 Vertebrate eye and retina Range from isolated neurons to complex sense organs with many neurons and supporting structures Tuesday, February 24, 2015
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Sensory Receptors Sensory neurons in skin Figure 6.13 Figure 6.37 Vertebrate eye and retina Will a photoreceptor respond to mechanical stimulation? Tuesday, February 24, 2015
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Specificity of response to stimuli Most receptors are most sensitive to one specific type of stimulus (the adequate stimulus ).
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