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Vision, sensation and perception, sensory input
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  • Course
  • Cognitive Psychology
  • Institution
  • University Of Westminster (UOW)

Provides the lecture titled Making sense of the world around us. Distinguishes between sensation and perception, covers sensory thresholds, vision, the connection of sensation and perception to the nervous system, explains bottom-up and top-down processing, and illusions.

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Document information

  • March 14, 2023
  • 4
  • 2019/2020
  • Class notes
  • Dr laura boubert
  • 2

Subjects

  • sensation
  • perception
  • vision
  • sensory threshold
  • bottom up solution
  • top down solution
  • illusions
  • size constancy

Written for

  • University of Westminster (UOW)
  • Unknown
  • Cognitive Psychology
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Cognitive Psychology |Lecture 2|1st Oct


MAKING SENSE OF THE WORD AROUND US
All of the information coming to our mind are coming
through our senses.


IS SEEING BELIEVING?
Not all the things we ‘see’ are true. Brain might be
interpreting the picture in different way than the reality is.
Also, it takes time for brain to process the information
which is coming from an eye (picture of a dalmatian).




SENSATION VS PERCEPTION




Sensation: raw data from environment which we are constantly surrounded by, information
from senses
Perception: interpretation of raw data in our mind
Transduction: receptors convert a physical energy into nerve impulses. Done by specialized
transduction cells in our sense organs (eye, ear..)


APPROXIMATE SENSORY THRESHOLDS OF THE FIVE SENSES
Threshold: limit - minimum level of energy that we need, to be able to sense. How much
stimuli we need to be able to notice it.

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