PSYB51H3 Lecture Notes - Lecture 12: Habituation, Linear Motion, Retina
Document Summary
Chemical compounds that are : volatile: fly through air, small, hydrophobic: able to have molecules to bind to olfactory sensations. > such as methane we cannot smell, same with carbon monoxide (extreme poisonous, good have detectors in our house: the human olfactory apparatus: Secondary purpose of the nose: the olfactory epithelium: the retina of the nose contains 3 types of cells, supporting cells, basal cells (precursors to , olfactory sensory neurons (osns) cilia protruding into mucus covering olfactory epithelium. Olfactory receptors (ors): interact with odorants --> action potentials along . Olfactory nerve (cranial nerve i; thin axons, slow: lesions to olfactory nerve cause anosmia: Olfactory loss can cause great suffering: sense of taste/flavour, danger warning. Early symptom for alzheimer"s, parkinson"s: the olfactory bulb: Glomeruli: spherical structures in which osns synapse with mitral cells and tufted cells. From chemicals to smells: shape-pattern theory: match between shapes of odorants and odor receptors (key & lock); dominant biochemical theory.
