behavioral psychologist had come up with new use

not only a animal behavior but of human nature as well

and these use all concerned a process that we take for granted learning

because we are all surely born to learn

ironically one of the most important figures in this study of learning i've been pavlov

wasn't concerned with the subject that'll at least not at first

have a lot i'm noted russian scientists on the nobel prize for physiology in madison

in nineteen o four

as this original for that shows have love was initially interested in digestion and the

action of the cell a very glance

i diverting the saliva dogs in to test two

you could precisely measure if and how much they celebrated during digestion

when food was presented the dog salivating quickly and inherited sal a very reflex

but of a repeated testings a strange thing happened

the dogs calibrated before contact with the full

just this side of the food was enough to stimulate a drooling

then

just seeing the food dish or even hearing the footsteps the pavlov or his assistance

was enough to trigger this built in reflex

what is going on to elicit this response

pavlov decided to find out i systematically varying the stimuli and measuring the dogs reaction

metronome lights and bells work well use the stimuli and they all work as stand

ins for the food

what mattered was not the kind of stimulus that was used for the fact that

reliably signal the pool was on the way

have a lot have discovered fundamental type of learning or classical conditioning

in original stimulus elicits an automatic on learn response both stimulus and response happen actually

they are on condition

in a second neutral stimulus that never elicit on condition response by itself is introduced

just before the presentation of the original stimuli

the neutral or signalling stimulus is presented alone

and response occurs as if the original stimulus was still there

we say that conditioning has taken place just

arbitrary neutral stimulus becomes a conditions

the reverse is also true

pavlov and how this study the extinction over time of such conditioned responses

when the subject learns that the condition stimulus no more mixed signals the desired event

speech transposition process is reversed as the learned connection is gradually weaker

how blobs work the work of those are followed him like to a remarkable conclusion

and that is any stimulus an organism can perceive is capable of eliciting any reaction

the organism is capable of making

this means that virtually in sound site or smell can influence the way i muscles

tense or relax

or moves fluctuate or even the way our right to therefore

for instance if i say relax

and then do this

you going to be startled enough set

after five or six pairings of relax

just saying the word relax

is going to generate and negative response rather than its usual learned reaction