Outline 34 2008 Sensory systems

Outline 34 2008 Sensory systems - Lecture 34 SENSORY...

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Lecture 34: SENSORY SYSTEMS Summary. The senses are an animal’s perceptual windows on the world. Every sensory system consists of accessory structures that filter and concentrate stimuli, receptor cells that transduce physical energy into neuro-electrical events, and neural networks that process and analyze the physical stimulus and interpret it in practical terms for the animal. Many systems show a reduced response to stimuli that are constant, but react more strongly to change which can indicate something significant in the animal’s environment. For several sensory modalities, transduction is now understood at the molecular level. Sensory events guide behavior, by orienting it and by selecting the appropriate actions from the available choices in the animal' s repertoire. Reading Assignment Campbell, N. A. and Reece, J. B. (2008). 8 th edition. Chapter 50 (1087-1105) Objectives 1. To be able to describe for each of several sensory systems the accessory structures that amplify the signal, the receptor cells that do the transduction, the
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This note was uploaded on 09/13/2009 for the course BIO 1110 taught by Professor Randywayne during the Fall '09 term at Cornell.

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Outline 34 2008 Sensory systems - Lecture 34 SENSORY...

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