070205 Chapter 3

070205 Chapter 3 - 1 2/5 ch 3 How it all began Pavlov(who had previously received a Nobel Prize for his studies of the physiology of digestion

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2/5 ch 3 How it all began… Pavlov (who had previously received a Nobel Prize for his studies of the physiology of digestion) wondered if different types of salivary secretions were evoked by different types of food. So he had dogs in halters with their salivary glands externalized and dripping into a vial, and he wanted to see if differences in what the dogs ate produced differences in their type of salivation. The only problem with this idea was that dogs started salivating before they ever got food on their tongues; apparently, merely the appearance of the experimenter who always fed them elicited salivation. Pavlov called this a psychic reflex (the eliciting stimulus was all in the dog's "mind". ..) and started studying the parameters of this phenomenon instead. A. Classical conditioning paradigm (paradigm = general model) (US = S*) Sn Rn + US UR Sn Rn CS CR + US UR CS CR + US UR CS CR (omit US) 1. unconditional stimulus (US) elicits unconditional response (UR) 2. neutral stimulus (Sn) elicits neutral response (i.e., "neutral" meaning nothing like the UR) 3. Sn paired repeatedly with US 4. Sn is called a "conditional stimulus" (CS) once it elicits the reflex (conditional response, or CR) before US is presented 5. CR not exactly like UR; is usually a weaker or initial component of it 6.[ When conditioning is maximally adaptive (efficient, or learned best), the CR appears right before the US and blends with the UR. 6. CC is stimulus-stimulus learning, or stimulus-substitution learning—the CS has become functionally
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This note was uploaded on 04/05/2008 for the course PSYCH 311 taught by Professor Rovee-collier during the Spring '06 term at Rutgers.

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070205 Chapter 3 - 1 2/5 ch 3 How it all began Pavlov(who had previously received a Nobel Prize for his studies of the physiology of digestion

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