PSYC1020 Lecture Notes - Lecture 7: Operant Conditioning, Systematic Desensitization, Little Albert Experiment
Document Summary
Lecture 7 physiological methods & classical conditioning: conventional method: lesioning, modern methods: single-cell recordings, eeg, fmri, tms. Issues: extensive injury o impairment is extensive, compensatory changes in other brain areas o convenience sample, does(cid:374)"t take i(cid:374)to a(cid:272)(cid:272)ou(cid:374)t that the (cid:271)rai(cid:374) is a network. Electroencephalogram: electrodes measure activity generated by groups of neurons firing o. Can also be recorded subdurally o provides a gross estimate of the overall brain activity. Event related potentials o check for spikes in recordings o specific section of the eeg signal that occurs in response to particular event/stimulus fmri: detects changes in blood flow. Erps and fmris all correlative: magnetic fields stimulate the cortex, creates a virtual lesion which is safe and reversible. Sti(cid:373)ulati(cid:374)g bro(cid:272)a"s area (cid:373)akes it diffi(cid:272)ult to talk. I(cid:374)trospe(cid:272)tio(cid:374) used to (cid:271)e used (cid:271)ut it (cid:272)a(cid:374)"t (cid:271)e o(cid:271)served: pavlov"s dog, association between stimulus and response, preparing for an event that will happen anyway, different to operant conditioning (altering behaviour for rewards)
