27_Communication I Cricket Song _ Bird Song

27_Communication I Cricket Song _ Bird Song - 3/23/2010

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3/23/2010 1 Communication is the transfer of information from one organism to another. Can be acoustic (speech, calls), olfactory (pheromones), visual (facial expressions, other visual cues), tactile, or even electrosensory (in electric fish). Communication involves encoding a message sending a message receiving Neurobiology of communication a message, a message, it, and decoding its meaning. Mechanisms for production and reception must be matched for accurate transfer of information. Neurobiology of communication: Cricket song Male cricket calling song
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3/23/2010 2 Phonotaxis by female crickets to calling song Cricket song behavior female cricket Phonotaxis requires species specific carrier frequency and syllable period. Cricket song behavior
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3/23/2010 3 Cricket song production Song production is driven by a central pattern generator (CPG), which drives alternating contraction of opener and closer muscles to create a syllable. Cricket song reception and localization Determining direction of song: AN 1 neurons Pressure gradient ears localize sounds at the carrier frequency. Sound on one side activates the closest ear most. Auditory afferents project to AN 1 neurons. The cricket steer The cricket steers towards whichever AN 1 neuron is more active.
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3/23/2010 4 Cricket song Recognizing sound as calling song: interpulse interval Cricket song Song characteristics are determined genetically Soundamplitude
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This note was uploaded on 04/05/2010 for the course MCB 167 taught by Professor Feldman during the Spring '10 term at University of California, Berkeley.

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27_Communication I Cricket Song _ Bird Song - 3/23/2010

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