Download Principles of Electrolocation and Jamming Avoidance in by W. Heiligenberg PDF

By W. Heiligenberg

This publication, including the subsequent two,-which are good below means and should be successful it at periods of, we are hoping, not more than six months, units the level for a brand new editorial firm within the box of mind technology. The accessory is at the practical points of brains instead of on their improve­ ment, for that reason the identify of the sequence. The crucial query being how neural task is expounded to behaviour, there'll be, clearly, a large scatter of sub­ jects, and Heiligenberg's monograph on electrical fish should be thought of typ­ ical of the anticipated ordinary deviation from the suggest. Deviations in different instructions may fit so far as the sensory neuron, or mind thought, or aphasia, or farther. the subsequent contributions deliberate for the sequence are: Precht, Neuronal Operations within the Vestibular method, and Movshon, Genes and surroundings within the improvement of the visible Cortex. Our goal is to ap­ proach the imperative region by way of whatever like an evolving instruction manual of mind technological know-how. the person monographs should still describe promising and profitable ways, even in components the place the ultimate is much from being stated. along with originaI monographs and compounds of the author's personal released papers, studies also are we1come in the event that they are greater than the sum of the components. The writer gives you fast book, and the editors will see that the manuscripts might be readable in addition to fascinating. Tübingen, summer season 1977 V.

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Additional resources for Principles of Electrolocation and Jamming Avoidance in Electric Fish: A Neuroethological Approach

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The spino-eerebeIlar traet (see Fig. 5) is a potential path to relay proprioeeptive feedbaek to the lobus caudalis. The tendons of the eleetrie organ in mormyrids, extensively innervated by spinal sensory nerves (Bruns, 1971, eited by Maler, 1974) eould also monitor the animal's tall posture. A long tai! filament thus enables an animal to enhanee 'eleetrie images on its body surfaee. In some species of South American eleetrie fish, the tail filament may be several times longer than the body proper itself (Hopkins, per~.

0 Gain ~ - - - :- - :- -. 5 -% -IT ~ •• • • o - i -40 i -30 i -20 - - - - • I i -10 - - . - - . =. =. =====~ ===: • • Phase Fig. 32. Gain and phase of Eigenmannia's Following Response as a function of ~f, the difference between stimulus frequency, S, and EOD frequency, F t , during a JAR. ~f values near zero (bar above abscissa) can only be maintained by frequency clamping of the stimulus generator, as the animal's F t otherwise will diverge from S. Open symbols are values obtained in the absence of electric stimuli, with dashed Unes indicating ± standard deviation range.

39). Since tminterrupted series of coincidences are most detrimental to electrolocation, gymnotoid pulse species should be expected to avoid their occurrence. Cross correlations between EOD events of two specimens with similar EOD frequeneies indeed show lowered probabilities of coineidenees (Fig. , during periods of high activity and alertness. 1 A a ! L n . -----0 o 1 2 3 4 5 6 7 8 9 10 11 ·n eonseeutive number of B's EOO Fig. 39. (a) A and B fire at frequencies fA and f B respeetively, their EOD intervals are _1_ and _1_ respeetively.

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