BIOL 1111 Lecture 1: Chapter 47
31 Jan 2019
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Document Summary
Most behaviors are both instinctive and learned (nature vs. nurture) Song birds, singing is instinct, type of song learnt. Highly stereotyped, repeatable in response to sign stimuli, genetic basis, can be modified by experiences. Some parasitic species exploit fixed action patterns by replicating sign stimuli. Parasites take advantage of fixed action pattern by replicating sign stimuli. 1- imprinting: learn key features of stimuli during critical period. 2- classical conditioning: mental association between unrelated phenomena. 3- operant conditioning: link voluntary operant with favorable reinforcement. 5- habituation: lack of response to unimportant stimuli, saves energy. Behavioral responses depend on elaborate phsyiological foundation provided by biochemistry and structure of nerve cells. Birds learn songs (critical period) biochemistry and structure nerve cells (nuclei) are simulated by specific cues (within nuclei and territories) Retains ability to hear and repel invaders. Chemical signals that can trigger the performance of specific behaviors by. 1- regulating neural development: higher vocal center less developed in female.
