BIO320H5 Lecture Notes - Lecture 4: Wavelength, Coevolution, Sodium-Potassium Alloy
Document Summary
Bio320 lecture four- sensory systems: costs, trade-offs, and integration. We see a loss of sensory systems or cognitive systems: moth fly away, no bats have ever reached those islands, because there are not bats, the moth don"t hear high frequency sound. The interneurons that connected to that alert defensive response have disintegrated, because it was not maintained. And if you have a sensory system and it prey specific and the prey is no longer in your space, you then also have system that can be susceptible to false positive. These guys can react to snapping of twigs: migratory song birds 2 of their brain structure is recreated over each year of life. As they come back to canada for mating season, each year song nuclei rebuild and their ability to sing rebuilds. And after mating season, they take out those structures and use them for other things.
