. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GASTROPOD MODEL OF LEARNING 507. FIGURE 1. A three-dimensional representation (upper sketch) of the metathoracic gang- lion of a young adult male cockroach. Note that all the cells except those associated with nerve 2 send their axons out from the ipsilateral nerve trunk. The lower outline indicates some of the cell bodies and connectives investigated (Cohen and Jacklet, 1967). Note that all the cells except those associated with nerve 2 send their axons out from the ipsilateral nerve trunk. Horridge, 1965; Runion and Usherw
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GASTROPOD MODEL OF LEARNING 507. FIGURE 1. A three-dimensional representation (upper sketch) of the metathoracic gang- lion of a young adult male cockroach. Note that all the cells except those associated with nerve 2 send their axons out from the ipsilateral nerve trunk. The lower outline indicates some of the cell bodies and connectives investigated (Cohen and Jacklet, 1967). Note that all the cells except those associated with nerve 2 send their axons out from the ipsilateral nerve trunk. Horridge, 1965; Runion and Usherwood, 1968; Burrows, 1973; Burrows and Hoyle, 1973 ; Hoyle and Burrows, 1973a, 1>; Burrows and Horridge, 1974; Pearson and Goodman, 1979), and the cockroach (Eisenstein and Cohen, 1965; Wilson, 1965, 1966; Cohen and Jacklet, 1967; Aranda and Luco, 1969; Disterhoft et al, 1968; Disterhoft et al., 1971; Pearson, 1972). Thus far the nervous systems of these preparations (Fig. 1) have proven rather complex for a comprehensive neural network analysis. To achieve such an analysis, other investigators turned to gastropod molluscs for learning models. A non-associative behavioral change, habituation, was produced with gastropods many years ago (Humphrey, 1930; Harris, 1943; Thorpe, 1963). Hughes and Tauc (1963) produced a decreased amplitude of compound excitatory post-synaptic potentials (EPSPs) in an Aplysia neuron by repeated mechanical stimulation applied to the animal's skin. Bruner and Tauc produced a similar decrease in the giant cell of the left pleural ganglion by repeated electrical stimulation of afferent fibers (1964). Subsequently, Kandel. Peretz, Tauc, and their colleagues established more clearly the relationship of de- creases in unitary EPSPs to habituation of Aplysia behavior (Bruner and Tauc, 1964; Kandel and Tauc, 1964; Bruner and Tauc, 1965, 1966a; Kupferman ct a/.. 1970; Peretz, 1970; Carew ct al., 1972; Carew and Kandel, 1973; Eisenstein and Peretz, 1973; Peret
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
