psyc4 - Sensation and Perception Sensation process of...

Info icon This preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Sensation and Perception Sensation - process of gathering information about the environment Perception - process by which brain organizes and interprets sensory information two sides of the same coin Perception - active process Ambiguous figures
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Demonstration of Perception vs. Sensation
Image of page 2
Basic Principles Three principles: No one-one correspondence between physical and psychological reality Sensation and perception are active processes Sensation and perception are adaptive
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Common Features of Sensory Systems Sensory receptors translate physical stimulation into neural signals - transduction Light, sound waves, heat, vibration Minimum energy required to activate the system - threshold Sensitive to change in stimulation (adaptation to constant input)
Image of page 4
Specialization for Modality Sensory receptors - tuned to a particular form of energy Auditory receptors in ear code sound pressure, not light
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Thresholds Minimum amount of energy to activate sensory system ( absolute threshold ) Just-noticeable difference (JND): minimum difference in stimulation that is just noticeable Weber - JND is a fraction of original stimulus intensity “Weber” fraction is different for different senses
Image of page 6
Signal Detection Theory Studying choice behavior Two-choice discrimination Manipulate cost and benefit of different behaviors Assess Sensitivity -- perceptual acuity Bias -- over-selection of a response
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern