Factors Regulating the Discharge Frequency in Optomotor Fibres of Carcinus Maenas | Zendy

C. A. G. Wiersma | Zendy; L. Fiore | Zendy

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Factors Regulating the Discharge Frequency in Optomotor Fibres of Carcinus Maenas

Author(s) -

C. A. G. Wiersma,

L. Fiore

Publication year - 1971

Publication title -

journal of experimental biology

Language(s) - English

Resource type - Journals

eISSN - 1477-9145

pISSN - 0022-0949

DOI - 10.1242/jeb.54.2.497

Subject(s) - carcinus maenas , eyestalk , habituation , tonic (physiology) , biology , escape response , zoology , inhibitory postsynaptic potential , anatomy , chemistry , decapoda , crustacean , ecology , endocrinology , neuroscience

1. The influence of the excited state of the animal on various motor neurone discharges and accompanying muscle action potentials was studied in the eyestalk of the crab, Carcinus maenas. 2. In most cases large increases in firing frequency could be obtained during such states. An exception is the tonic eye-withdrawal system in which an inhibitory effect is caused. 3. A pronounced difference in habituation to constant stimuli between spring and summer was found for the position fibres; in spring it was slow and in summer much quicker.

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