BIOL 3750 Lecture Notes - Lecture 4: Operant Conditioning, Nuptial Gift, Classical Conditioning
27 Mar 2017
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Biol/ psyc 3750: animal behaviour - lecture 4. An instinctive behavioural sequence that is relatively invariant and almost inevitably runs to completion. Examples are egg rolling in geese, defensive/courtship behaviour in sticklebacks, aggressiveness of herring gull based on red spot on male beaks, feeding behaviour in parasite birds. Exceptions include reduced response threshold, vacuum activity, displacement behaviour, graded responses, and intention movements. An example of comparative analysis to determine behaviour. Saw that male balloon flies spin elaborate silken balloons to gain attention of females to mate, where it acts as a nuptial gift. Empididae flies occasionally cannibalize males during courtship and hypothesized this was a way of avoiding that. Involves association of stimuli to produce a learned response (ur, us, cs, cr, acquisition, and extinction). After repeated pairings, they measured the response to tone alone. Eventually the bell alone elicited salivation (cr), which he termed acquisition: human enuresis- paired bed wetting with waking up.
