2010 Bio 317 Lecture 11

2010 Bio 317 Lecture 11 - Prof. Arianna Maffei Office: 546...

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Unformatted text preview: Prof. Arianna Maffei Office: 546 Life Sciences Building Office Hours: Tuesdays, 11:30 AM - 12:30 PM or by appointment Recommended Reading: handout BIO 317: Lecture 11 Effect of Stimulus Strength on AP Production Dynamic Range of Some Receptors Range Fractionation Sensory transduction process has a broad dynamic range Range Fractionation-not all receptors have the same dynamic range within a sensory system Sensory adaptation to prolonged stimulation changes amplification process Neuronal networks can further extend the range of sensitivity Stimulus Intensity / AP Frequency Relationship Relationship of stimulus intensity to action potential frequency is logarithmic any given % change in stimulus intensity evokes the same increment of change in receptor potential over a broad range Mechanoreceptors All involve a stretch or distortion of the plasma membrane that alter ion channel function Most open channels that are either activated or inactivated by stretch - probably found in all...
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This note was uploaded on 03/28/2011 for the course BIO 317 taught by Professor Simonhalegoua during the Fall '08 term at SUNY Stony Brook.

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2010 Bio 317 Lecture 11 - Prof. Arianna Maffei Office: 546...

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