Introduction: Theoretical Basis for Telencephalic Function
What differentiates the telencephalon from the rest of the central nervous system is the following function: The telencephalon allows an animal (human) to make decisions in new situations. All other telencephalon related behaviors like arousal, responsiveness, exploration, discrimination, inhibition, disinhibition, reversal learning, escape, avoidance, caution, aggression, etc. can be judged to be needed for this function, but are subordinate (for a review see Ebbesson, 1980). The latter processes lead to and result from decision making and can also be performed by non-telencephalic brainparts. Especially in lower vertebrates motor templates for simple to complex behavior are ready in the medulla (Hutchison and Poynton 1963/1964; Schmidt 1976; van Mier 1986, 1988), the cerebellum is involved in learning, memory, and motivation (Thompson 1983; Supple et al. 1987), and the reticular formation and raphe nuclei are involved in arousal (Hobson and Brazier 1980; Cordona and Rudomin 1983; Heimer 1983).
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