PSYC 100 Chapter Notes -Olfactory Bulb, Photorec, Primary Olfactory Cortex

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Ingrid Johnsrude

Document Summary

How neurons receptor cells convey stimuli into information for the brain. Place code: neurons in different places of the body signal different qualitative features (eg. a wavelength in a specific place will stimulate a photoreceptor in the retina that corresponds to the wavelength"s position) Temporal code: neurons can fire at different speeds (eg. pitch, loudness, and intensity depend on firing rate--> sensory adaptation decreases intensity) Cranial nerves: carries sensory info for vision, hearing, gustation, olfaction, vestibular, skin, and kinesthetic sensation to brain. Sensory adaptation: what happens to sensation (and thus perception) when you fatigue specific sensory neurons; a change in sensitivity, system becomes less responsive in order to ignore stimuli that is unchanging and irrelevant. Accommodation: the lens of our eye becomes short and fat to focus on close things, and long and skinny to focus to far-away things. Lens and cornea collects and focuses light rays reflected from the object.