When the dog is repeatedly teased with the sight of objects inducing salivary secretion from a distance, the reaction of the salivary glands grows weaker and weaker and finally drops to zero.
Interpretation
This quote illustrates the concept of habituation, where repeated exposure to a stimulus reduces the response over time.
Ivan Pavlov's quote reflects his findings in classical conditioning and physiological responses, specifically how an organism's reaction diminishes when exposed to the same stimulus without reinforcement. In this scenario, the salivary glands of a dog eventually become less responsive to cues that previously triggered its salivation, highlighting the importance of consistency and expectation in learning and behavioral response.
In practice
In a psychology lecture about conditioning, you could use this quote to demonstrate how repeated exposures affect behavior.
If we could look through the skull into the brain of a consciously thinking person, and if the place of optimal excitability were luminous, then we should see playing over the cerebral surface, a bright spot with fantastic, waving borders constantly fluctuating in size and form, surrounded by a darkness more or less deep, covering the rest of the hemisphere.
From the described experiment it is clear that the mere act of eating, the food even not reaching the stomach, determines the stimulation of the gastric glands.
It is not accidental that all phenomena of human life are dominated by the search for daily bread - the oldest link connecting all living things, man included, with the surrounding nature.
Science demands from a man all his life. If you had two lives that would not be enough for you. Be passionate in your work and in your searching.
Learn the ABC of science before you try to ascend to its summit.
Do not become archivists of facts. Try to penetrate to the secret of their occurrence, persistently search for the laws which govern them.
What we observe as material bodies and forces are nothing but shapes and variations in the structure of space.
If any remedy is tested under controlled scientific conditions and proved to be effective, it will cease to be alternative and will simply become medicine. So-called alternative medicine either hasn't been tested or it has failed its tests.
although science could pinpoint the exact spot in the brain that ignites rage, they had yet to identify the location that produces love.
No doubt science cannot admit of compromises, and can only bring out the complete truth. Hence there must be controversy, and the strife may be, and sometimes must be, sharp. But must it even then be personal? Does it help science to attack the man as well as the statement? On the contrary, has not science the noble privilege of carrying on its controversies without personal quarrels?
If you go down through the horizon of a black hole, at the center you don't find a tunnel that leads you to some other place in the universe.
A lot of the time, when I find myself critiquing scientific accuracy in movies, I have to remind myself that it had to get close enough to getting it right to get things wrong.
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