PSYCH101 Lecture Notes - Lecture 6: Ambiguous Image, Railways Act 1921, Hair Cell
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Connecting our nervous systems to the environment: our senses link our nervous system to the world. Sensory system = has evolved to guide behaviours (approaching behaviour vs. Avoiding: not a full objective account of physical properties (specific information for survival and reproduction is needed) Five major senses: according to aristotle we have 5 main senses Smell: molecules dissolved in fluid on mucous membranes of nose. Sensitive ends on olfactory neurons in the olfactory skin in the nose: olfactory neurons regenerate. Taste: molecules dissolved in fluid on tongue taste cells in taste buds on the tongue. Touch/pain pressure on skin: harmful stimuli. Sensitive ends of pain neurons in skin/other tissues. Sound waves: pressure-sensitive hair cells in cochlea of. Some senses are all in one location (ear, nose, eye) while others are everywhere (pain receptors, muscles: the pathways to the cns are unique to each sense.
