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