PSYCO104 Lecture Notes - Lecture 19: Taste Bud, Olfactory System, Tongue Map

• School: University of Alberta
• Department: Psychology
• Course: PSYCO104
• Professor: Claire Scavuzzo

Document Summary

Inter-aural intensity differences: sounds from the left will be louder at the left ear than the right ear. The head attenuates high frequencies (low frequencies move round the head). Inter-aural time differences: sounds from the left will arrive earlier at the left ear than the right ear, we are sensitive to about 10 millionths of a second. The life of a taste bud is short (10 days) and again must require memory" (beidler. & smallman, 1965): as a point of reference, snakes have 0 taste buds, catfish have 175,000 taste buds which also happen to be on their body. Smell: does not get relayed through the thalamus, first off, odors must be volatile to have an effect: they must give off vapors, typically be airborne molecules and also soluble in fat. Sobel et al. (1999) noted a difference in air flow between left and right nostril: the lifespan of an olfactory neuron is about 4-8 weeks.