PSYC 1 Lecture Notes - Lecture 11: Parallax, Simple Features, Hemispatial Neglect
Document Summary
Sensation: the detection of physical energy by sense organs: by cells in the eye, nose, ear, skin, & tongue. Perception: the brain"s interpretation of raw sensory input. For all of our senses : stimuli: physical energies that affect what we do, receptors: specialized cells that convert physical stimuli into electrical signals in the nervous system. Sensory adaptation: stimulus is strongest when we first sense it, after that, the sense declines in strength: happens at the level of the sensory receptor o. When you first jump into a cold pool, it feels freezing, but you soon get used to it. Absolute threshold: the lowest level of a stimulus that we can detect 50% of the time: examples. Vision: the amount of light present if someone held up a single candle 30 mi away from us, if our eyes were used to the dark. Hearing: ticking of a watch in a quiet environment at 20 ft.
