Charles F. Lamb

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Vertebrate gustatory systems include a tertiary ascending pathway from a secondary gustatory nucleus in the hindbrain to several forebrain nuclei. This connection is prominent in catfish, corresponding to their highly developed sense of taste. Iontophoretic injections of horseradish peroxidase were used to identify the specific target nuclei of the tertiary(More)
The present study tests the effects of gustatory quality on feeding behaviors exhibited by goldfish. Goldfish were trained to feed on gelatin pellets, then tested with pellets containing potentially aversive taste stimuli (quinine or caffeine), or mixtures of aversive and appetitive components (amino acids or food). Goldfish feeding includes: initial intake(More)
Many teleosts possess an enlargement of the ventral diencephalon called the inferior lobe. In ostariophysine species (e.g., carps and catfishes), this region receives ascending fibers from the primary and secondary gustatory centers in the hindbrain. Extracellular unit activity was recorded from identified nuclei in the inferior lobe of the channel catfish(More)
The second gustatory nucleus of teleost fishes receives ascending fibers from the primary gustatory center in the medulla and sends efferent fibers to several nuclei in the inferior lobe of the diencephalon. Similar to the corresponding parabrachial nucleus in birds and mammals, the secondary gustatory nucleus of catfish consists of several(More)
Five days prior to first exogenous feeding, amino acid stimuli released reflexive biting/snapping behavior in alevins of both rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis). The biting/snapping responses of salmonid larvae, which obtain nutrients solely from their yolk sacs, were videotaped during presentations of amino acids(More)
Neurons within the superior secondary gustatory nucleus (nGS) of the channel catfish were examined electrophysiologically for responses to mechanical and chemical stimulation of neural peripheral receptive fields (RFs). Of the 28 single units sampled, 18 had mechanosensory RFs on the extraoral epithelium, two had RFs within the oropharyngeal cavity, and(More)
To comply with new statutory reporting requirements, the Commission has updated its campaign finance disclosure forms 1, 1M, 2, 3, 3X, 3P, 4, 5, 6 and 8. These forms have been revised, as appropriate, to respond to reporting requirements such as mandatory electronic filing for committees whose contributions or expenditures exceed $50,000 per year and(More)
Previous studies in several fishes including catfish, have shown that primary trigeminal nerve (NV) axons terminate not only in the principal and spinal trigeminal nuclei, but in the facial (gustatory) lobes. The present study was undertaken to determine the extent and distribution of trigeminal terminations within the facial lobe (FL) and principal(More)
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