PSYC 306 Lecture 99: Sensory II
Document Summary
Learn about mechanoreceptors + stimulus filter in the star-nosed mole. Understand how peripheral and central stimulus filtering influence moles", snakes" and bats" umwelt. Learn how a sea turtle migration pattern suggests that they follow the magnetic pull of the earth. Learn what dog behaviour is the first evidence of mammalian magnetoreception, but also understand flaws in the study. Go through the possible neurological mechanisms for magnetoreception in birds. Learn the differing theories of magnetoreception and issues associated with these theories. Umwelt--> product of your perception + how you perceive the world. Shaped by demands + constraints imposed by environment. Mechanoreception + stimulus filtering in 4 related rodents. Unique structure on end of nose--> 22 appendages--> sense world around them with high equity. Closer to eyes, mouth, nostrils= different sensitivities depending on what they need. Borrow through ground + sense for worms= no energy to develop their eyes. 22 appendages= 25 thousand eimer"s organs (each one of the little nodules)
