Josh Dye

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1. Weakly electric fish generate around their bodies low-amplitude, AC electric fields which are used both for the detection of objects and intraspecific communication. The types of modulation in this signal of which the high-frequency wave-type gymnotiform, Apteronotus, is capable are relatively few and stereotyped. Chief among these is the chirp, a signal(More)
We have taken advantage of the increasing understanding of glutamate neuropharmacology to probe mechanisms of well-defined vertebrate behaviors. Here we report a set of experiments that suggests distinct roles for two major classes of glutamate receptors in a discrete premotor nucleus of the brainstem. The medullary pacemaker nucleus of weakly electric fish(More)
1. An in vitro preparation of the medullary pacemaker nucleus of the weakly electric fish Apteronotus leptorhynchus was studied which fires regularly and synchronously at the fish's characteristic frequency of electric organ discharge (EOD). Upon bipolar stimulation of tissue regions through which pass prepacemaker nucleus afferents to the pacemaker, a(More)
1. In an in vitro preparation of the medullary pacemaker nucleus of Apteronotus, the consequences of a variety of ionic and pharmacological manipulations upon both ongoing activity and synaptic modulation of the nucleus were assessed. 2. Spontaneous rhythmicity in the pacemaker nucleus was found to be Na+-, K+-, and Ca(2+)-dependent. The extreme sensitivity(More)
1. The weakly electric gymnotiform fish, Apteronotus leptorhynchus, can be induced to perform a variety of modulations of its quasi-sinusoidal, electric organ discharge (EOD) in acute physiological preparations. These modulations, many of which are communicatory in function, include the jamming avoidance response (JAR). We have recorded intracellularly from(More)
Economics, the Common Waters Partnership and the Pinchot Institute for Conservation came together to create a climate adaptation plan for the communities of the Upper Delaware River Region. Development of the plan came about because all parties, led by MFPP, recognized the critical need for local community resilience against the impacts of climate change by(More)
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