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PSYC 1001-002, week 4, notes

by: Jenna Notetaker

PSYC 1001-002, week 4, notes PSYC 1001-002

Jenna Notetaker

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About this Document

sensation and perception senses
General Psychology (Lecture)
Jennifer Stratford
Class Notes
Intro to Psychology
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This 2 page Class Notes was uploaded by Jenna Notetaker on Tuesday September 20, 2016. The Class Notes belongs to PSYC 1001-002 at University of Colorado at Boulder taught by Jennifer Stratford in Fall 2016. Since its upload, it has received 7 views. For similar materials see General Psychology (Lecture) in Psychology (PSYC) at University of Colorado at Boulder.

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Date Created: 09/20/16
Intro. To Psychology Week 4 Sensation­ objective (all sense organisms are stimulated the same way) Perception­ subjective (each person perceives the world differently) The 5 senses: taste, small, vision, hearing, and touch First sense developed is touch (8­10 weeks), then smell (11­15 weeks), then taste (13­15 weeks),  then hearing (24­37 weeks), then sight (26­32 weeks) Transduction­ convert environmental stimulus into an action potential  Different receptors and different nerves for different senses are independent  Synesthesia comes from Greek meaning “joined perception” The eyes stimulus is light Light reflected from a surface enters the eyes via the transparent cornea, bending to pass through  the pupil, at the center of the colored iris The thickness and shape of the lens adjust to focus light onto the retina, where the image appears upside down and backwards, vision is clearest in the fovea  Photoreceptors­ light sensitive neurons in the retina Myopia and hyperopia are caused by dysfunction of the muscles that control the shape of the lens Psychophysics­ examines how perceptions differ between people Optical illusions­ occur when features such as color and shape are combined incorrectly  Weber’s Law­ the just noticeable difference of a stimulus is a constant proportion despite  variations in intensity  Sensory adaption­ sensitivity to prolonged stimulation tends to decline over time as an organism  adapts to current conditions Visual acuity­ the ability to see fine detail  Color­opponent system­ pairs of visual neurons work in opposition  Visual form agnosia­ the inability to recognize objects by sight Binding problem­ how features are linked together so that we see unified objects in our visual  world rather than free­floating or mis­combined features  Illusory conjunction­ a perceptual mistake where features from multiple objects are incorrectly  combined  Feature­integration theory­ focused attention is not required to detect the individual features that  comprise a stimulus, such as the color, shape, size, and location of letters, but is required to bind  those individual features together Template­ a mental representation that can be directly compared to a viewed shape in the retinal  image Change blindness­ when people fail to detect changes to the visual details of a scene In­attentional blindness­ a failure to perceive objects that are not the focus of attention  Haptic perception­ active exploration of the environment by toughing and grasping objects with  our hands 


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