PNB 2250 Lecture Notes - Lecture 34: Visual Cortex, Phantom Limb, Homeostasis
3 Dec 2016
School
Department
Course
Professor
Document Summary
Sensory info: cell communication is dependent on internal and external information. Information is essential to survival and homeostasis maintenance. Perceived as sensation: animals do not sense all possible information in their environments. Only sense what is necessary to keep animal alive. Optimized for many different environments: dependent upon a complex nervous system. Attention: at any one point in time, animals are overwhelmed with information presented by environment. Sensory input: specialized structures called receptors. Ideally suited to detect different sensory modalities: transduction. Converting sensory information into a format understood by cells: electrical currents as output. In all animals, sensation is generated by the central nervous system and depends on sending information to the correct place in the body and brain. Sensations developed in the central nervous system. The correct sensation depends on the location in the central nervous system in which information in sent. Information sent by different sensory receptors is the same.
