PSYC1003 Lecture Notes - Lecture 9: Morphine, Endorphins, Semicircular Canals
Document Summary
Taste stimulus: soluble chemical solutions, receptor cells in taste buds. Pathway: taste buds neural impulse thalamus frontal lobe. Primary tastes: sweet, sour, bitter, salty, umami (savoury) Learned taste preferences: cultural and ethnic disparities found in taste preferences. Smell stimulus: substances carried through the air, dissolved in fluid- the mucous of the nose; olfactory receptors= olfactory cilia. Pathway: olfactory cilia neural impulse olfactory nerve olfactory bulb in brain. Olfactory bulb: smell is not rooted through the thalamus; smells are not easily distinguished. The flavour experience depends on the taste, smell, sight, sound, and context surrounding food; blind dining. Physical stimuli: mechanical, chemical, an thermal energy impinging on the skin. Pathway: sensory receptors the spinal column brainstem cross to opposite side of brain thalamus somatosensory (parietal lobe) Pressure is detected in receptive fields; temperature is detected by free nerve endings in the skin.
