o Sensation – when energy is converted to neural impulses. o Psychophysics – study of relationship between sensation and what you perceive o Signal detection – theory developed about the response bias. o Elasticity of the lens – gets harder as you get older. Lens makes you focus. o Retina – most important part of the eye, multilayered tissue that is in the back of your eye which contains rods and (dark) cones (light).
o Cones – color and light perception. o Fovea – area on the retina with ONLY cones. o Color blindness – when you don’t have any cones, and can’t see the color so Dark adaptation – when your rods need to adjust to the darkness Middle ear function – has bones, which vibrate to amplify the soun do Cochlea – just like the retina, but in the ear, lined with hair cells, takes the information to the auditory cortex. o Auditory cortex – receives info from cochlea o Auditory localization – sound reaches the two ears at different speeds, and you can locate the source for the soun do Cochlea implants, purpose for them – for deaf children, improves linguistic so Olfactory receptors – located in upper nasal passages, instead of sending the information through the thalamus it sends it through the hypothalamus o Reversible figures – people see it at the same pictures, but see different things, shows that your brain plays a role in perception o Gestalt – “whole” a school of thought rooted in the idea that the whole (perception) is different from the sum of its parts (sensation) o Closure – filling in the blanks in your mind to feel complete Perceptual constancy – depth perception o Shape constancy – the tendency to see an object as retaining its form despite changes in orientation o Monocular cues – distance, you only need one eyes Muller Lyer illusion – lines of equal length look longer or shorter depending on the extensions that you draw on the endo Visual cliff – demonstration that depth perception is innate o Sleep wake cycles – controlled by the hypothalamus, some of your body functions are shut of fo Stages of sleep – 5 stages. REM sleep – a lot like being awake but you have sleep paralysis. You lose skeletal muscle tone.
The Essay on Sensation Perception and Attention
Sensation, perception, and attention are crucial when working in a learning team. What we sense, how we perceive, and how attentive we are to the task at hand are all extremely important. What we sense will not always be the same thing. How we perceive an assignment or how we perceive each other will differ. The attention that we pay to detail or to each other will also differ. Sensation, ...
o Restoration – theory that only the frontal lobes are asleep and you simply try to overcome the tiring ness of the day Dream content – all dreams have meaning so Influences on dreams – some dreams make you think about the mo Lucid dreaming – when you have no control over your dream so Freud – dreams are expressions of unconscious wishes Activation-synthesis – based on biological realty that all mammals have REM cycles of their sleep, which is random neural firing. o Frontal lobes – part of your brain that falls asleep Hypersomnia – you can fall asleep without warning, type of narcolepsy o Sleep apnea – when you stop breathing during sleep Psychoactive – any drug that alters your moods, thoughts, or perception o Withdrawal – associated with most drugs, hang overs, cravings, etc Tolerance – you need more and more drugs to get the same effect Sedative types – alcohol, barbiturates, Binge drinking – technically 5 drinks in any one setting Alcohol – central nervous system depressant o Benzodiazepines – valium, , etc, different types of sedative so Stimulant types – cocaine, caffeine, etc, they make you giddy.
