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UBC / Psychology / PSY 101 / How do you differentiate sensation and perception?

How do you differentiate sensation and perception?

How do you differentiate sensation and perception?

Description

School: University of British Columbia
Department: Psychology
Course: Introduction to Biological and Cognitive Psychology
Term: Fall 2014
Tags:
Cost: 50
Name: Psych 101 midterm 2
Description: Study guide
Uploaded: 11/12/2017
14 Pages 135 Views 1 Unlocks
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"}ul.lst-kix_3w9ouhph3csn-1{list-style-type:none}ul.lst-kix_3w9ouhph3csn-2{list-style-type:none}ul.lst-kix_3w9ouhph3csn-3{list-style-type:none}ul.lst-kix_3w9ouhph3csn-4{list-style-type:none}ul.lst-kix_3w9ouhph3csn-5{list-style-type:none}ul.lst-kix_3w9ouhph3csn-6{list-style-type:none}ul.lst-kix_3w9ouhph3csn-7{list-style-type:none}ul.lst-kix_3w9ouhph3csn-8{list-style-type:none}ul.lst-kix_68922bfne28c-5{list-style-type:none}ul.lst-kix_ywwsp6dm1yhc-6{list-style-type:none}ul.lst-kix_68922bfne28c-4{list-style-type:none}.lst-kix_68922bfne28c-8 > li:before{content:"■ "}ul.lst-kix_ywwsp6dm1yhc-5{list-style-type:none}ul.lst-kix_68922bfne28c-3{list-style-type:none}ul.lst-kix_ywwsp6dm1yhc-8{list-style-type:none}.lst-kix_9euc7xji571q-6 > li:before{content:"- "}.lst-kix_9euc7xji571q-8 > li:before{content:"- "}ul.lst-kix_68922bfne28c-2{list-style-type:none}ul.lst-kix_ywwsp6dm1yhc-7{list-style-type:none}ul.lst-kix_68922bfne28c-1{list-style-type:none}ul.lst-kix_68922bfne28c-0{list-style-type:none}.lst-kix_iquodtco6iky-3 > li:before{content:"● "}.lst-kix_68922bfne28c-4 > li:before{content:"○ "}.lst-kix_9euc7xji571q-2 > li:before{content:"- "}.lst-kix_68922bfne28c-2 > li:before{content:"■ "}.lst-kix_iquodtco6iky-5 > li:before{content:"■ "}.lst-kix_l8kmralij5fn-4 > li:before{content:"- "}.lst-kix_68922bfne28c-0 > li:before{content:"● "}.lst-kix_l8kmralij5fn-6 > li:before{content:"- "}.lst-kix_l8kmralij5fn-8 > li:before{content:"- "}.lst-kix_1m2gn4nfwnsq-8 > li:before{content:"● "}ul.lst-kix_ywwsp6dm1yhc-0{list-style-type:none}.lst-kix_9euc7xji571q-4 > li:before{content:"- "}ul.lst-kix_ywwsp6dm1yhc-2{list-style-type:none}ul.lst-kix_68922bfne28c-8{list-style-type:none}ul.lst-kix_ywwsp6dm1yhc-1{list-style-type:none}.lst-kix_iquodtco6iky-1 > li:before{content:"○ "}ul.lst-kix_68922bfne28c-7{list-style-type:none}ul.lst-kix_ywwsp6dm1yhc-4{list-style-type:none}ul.lst-kix_68922bfne28c-6{list-style-type:none}ul.lst-kix_ywwsp6dm1yhc-3{list-style-type:none}.lst-kix_1m2gn4nfwnsq-4 > li:before{content:"◆ "}.lst-kix_i5xpuebtxf8n-7 > li:before{content:"- "}.lst-kix_1m2gn4nfwnsq-2 > li:before{content:"● "}.lst-kix_1m2gn4nfwnsq-6 > li:before{content:"○ "}ul.lst-kix_p81echgm430w-3{list-style-type:none}ul.lst-kix_p81echgm430w-2{list-style-type:none}ul.lst-kix_p81echgm430w-1{list-style-type:none}.lst-kix_g3y56gxw9i20-7 > li{counter-increment:lst-ctn-kix_g3y56gxw9i20-7}ul.lst-kix_p81echgm430w-0{list-style-type:none}ul.lst-kix_p81echgm430w-7{list-style-type:none}ul.lst-kix_p81echgm430w-6{list-style-type:none}.lst-kix_9euc7xji571q-0 > li:before{content:"- "}ul.lst-kix_p81echgm430w-5{list-style-type:none}ul.lst-kix_p81echgm430w-4{list-style-type:none}.lst-kix_l8kmralij5fn-2 > li:before{content:"- "}.lst-kix_iquodtco6iky-7 > li:before{content:"○ "}.lst-kix_veslktbmpjjs-7 > li:before{content:"- "}ul.lst-kix_p81echgm430w-8{list-style-type:none}.lst-kix_l8kmralij5fn-0 > li:before{content:"- "}.lst-kix_1m2gn4nfwnsq-0 > li:before{content:"➔ "}.lst-kix_68922bfne28c-6 > li:before{content:"● "}.lst-kix_v84pdbm6a0s9-3 > li:before{content:"○ "}ul.lst-kix_evclxf67lpvs-0{list-style-type:none}.lst-kix_g3y56gxw9i20-0 > li{counter-increment:lst-ctn-kix_g3y56gxw9i20-0}ul.lst-kix_evclxf67lpvs-1{list-style-type:none}.lst-kix_g3y56gxw9i20-6 > li{counter-increment:lst-ctn-kix_g3y56gxw9i20-6}ul.lst-kix_evclxf67lpvs-2{list-style-type:none}ul.lst-kix_evclxf67lpvs-3{list-style-type:none}ul.lst-kix_evclxf67lpvs-4{list-style-type:none}ul.lst-kix_evclxf67lpvs-5{list-style-type:none}ul.lst-kix_evclxf67lpvs-6{list-style-type:none}.lst-kix_v84pdbm6a0s9-7 > li:before{content:"◆ "}.lst-kix_v84pdbm6a0s9-1 > li:before{content:"◆ "}.lst-kix_ywwsp6dm1yhc-2 > li:before{content:"■ 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li:before{content:"- "}.lst-kix_i5xpuebtxf8n-3 > li:before{content:"- "}.lst-kix_k2mpq8wwhc3y-2 > li:before{content:"■ "}.lst-kix_ghgndtafs6j0-0 > li:before{content:"- "}.lst-kix_k2mpq8wwhc3y-8 > li:before{content:"■ "}.lst-kix_ywwsp6dm1yhc-4 > li:before{content:"○ "}.lst-kix_ghgndtafs6j0-2 > li:before{content:"- "}.lst-kix_ywwsp6dm1yhc-6 > li:before{content:"● "}.lst-kix_ywwsp6dm1yhc-8 > li:before{content:"■ "}.lst-kix_k2mpq8wwhc3y-6 > li:before{content:"● "}
  • November 15, 2017

If you want to learn more check out What is the measurements of length?

Midterm Exam # 2

  • Sensation & Perception

  • Sensation vs. Perception
  • Sensation is when a sense organ (eyes, skin, etc) gets stimulated through neural signals that were converted by transduction *
  • Perception is the organizing, identifying & interpreting of sensations to make a response.
  • Perception is what varies between people, so even if the input is the same, the reaction could vary.

  • measuring perception
  • psychophysics = the measurement of strength of a stimulus and observers sensitivity to the stimulus.
  • Absolute Threshold = the smallest amount that detects the stimulus 50 % of the time.

  • What affects Perception?
  • noise, smell, emotional state, might impact our ability to detect stimuli
  • Signal Detection Theory = A way that people differentiate between a signal and a distraction
  • Hit / miss, False Alarm, Correct Rejection.
  • Sensory Adaptation = When an organism gets used to a stimulation, the sensitivity towards that stimulus decline

We also discuss several other topics like What is the meaning of competitions and competitive intelegence?

  • Vision

  • The Human Eye
  1. Light goes through the cornea - which bends the light & sends it through the pupil.
  2. The iris controls how much light gets in by contracting / relaxing (iris = colored part = a muscle.)
  3. The lens bends the light again for focus ← to hit the retina

☀ → C → P → I → L → R Don't forget about the age old question of What are the goods to include in ending inventory?

  • Accommodation : the lens of the eye changes shape to focus the light / object onto the reting ; if the eye is too long / short, the image does not focus.

Don't forget about the age old question of Who are the fearsome fates?

Fovea : area of the largest visual acuity in the retina (allows us to see final detals ← colour)

If you want to learn more check out What is Chronometer?

Retina : • Photoreceptors = cells that contain light sensitive photopigment that transolve into neural signals.

Photoreceptors → Bipolar cells → Retinal Ganglion Cells (RGC) → Optic Nerve

  • Colour vision : Trichromatic Theory = 3 cone types (recognize different wavelengths of light (red, green & blue) ).
  • comes from the combined activation of the 3 cones

Opponent Process Theory = colours are detected at photoreceptors, but processed at RGC.

  • opposite pairs of colours are processed at the same time.
  • If one ganglion cell gets excited the other turns off.
  • Colour rebound effects - when one cell type gets fatigued, the opposite type fire.
  • After Photoreceptors are Activated:
  • P→B→R→O
  • Everyone has a blind spot where the optic nerve leaves the eye.

We also discuss several other topics like How do bacterial cells increase in size?

From the Retina to the Brain

  • Visual information leaves the reting through the optic nerve.

  • Information transferred to the lateral geniculate nucleus to the thalamus
  • Then to Area V1 (primary visual cortex) - information is mapped into a visual representation to the brain.

The Primary Visual Cortex - neurons in V1 respond to bars

        *edges in certain onentations.

        

  • Shapes and edges are recognised by different neurons firing in different patterns.

  • Brain Pathways : neurons in the V1 are send signals to the rest of the brain by:
  • Dorsal Pathway = Where & How (processing location)
  • Ventral Pathway = What (identification & recognition)
  • Parallel Processing = when several parts of a stimulus are processed at the same time. (Colour & motion & depth)

  • Blind Spots =
  • Damage to one pathway, but other one works
  • Some people with damage to V1 area have blind spots (but the ‘where’pathway can bypass the V1 through superior colliculus on in the tectum.)

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