PSC 100 Lecture Notes - Lecture 2: Olfactory Bulb, Olfactory Epithelium, Piriform Cortex
Document Summary
Labeled line theory same thing, each receptor will send an axon to different parts of the gustatory cortex! The taste pathway does not synapse on the thalamus goes to the orbitofrontal cortex instead. Olfactory cells have receptors which work in a gpcr mechanism. Pheromone; chemical signal released by one species and sensed by another to trigger an innate response. Not necessarily in humans, but very important in animals. Olfactory bulbs are in the temporal lobe. Labeled-line theory; each receptor responds to a specific stimuli directed to a specific part of the brain. Vibrational theory vibration frequency of a molecule is what gives it it"s odor. Steric theory odors fit into receptors in a lock and key fashion. The olfactory system does not synapse on the thalamus. Kinesthetic sense (proprioception) is the sense of knowing where our body is in space. Receptors for proprioception is usually found in muscle and joints.
