PSY 2105 Chapter Notes - Chapter 7: Evoked Potential, Orienting Response, Habituation
13 May 2018
School
Department
Course
Professor
PSY2105A Dr. Isabelle Boutet
Chap 7: Perceptual Changes 08.05.18
Chap 7 p 218-240
Methods to Research Perception in Infants
Iestigate pereptio y isile, oserale resposes at do eral ith babies)
Preferential Looking – infants have spontaneous looking preferences for certain types of stimuli
Logic – When an infant prefers one stimulus over another, it implies that the infant can discriminate btwn those
stimuli; determine the smallest amount of details for children to determine differences
• i.e contrast sensitivity – newborns only see things with high contrast, develop ability to see things with
low contrast as they age; help determine acuity
Habituation – an individual reacts with less and less intensity to a repeatedly presented stimulus
• applies to a variety of physiological responses – sucking, heart rate, breathing, orienting response, eye
movements
Logic – evaluate discrimination; if the infant can discriminate the habituated from the novel stimulus, the decrease
in response should not generalize to the new stimulus
• assumes the infant always have preferences for novel stimuli, irrespective of the visual characteristics of
the habituated and novel stimuli
Visual Scanning – where an infant is looking to determine what they see; the order in which the infant looks at
various parts of an object
• i.e measuring eye movements – determine what part of the object they are looking at; babies focus on
edges
Cortical Evoked Potential – visual evoked potentials, measure brain responses of visual stimuli; stimuli that are
resolved will elicit a VEP (brain wave patterns)
Development of Touch and Pain, Smell, Taste, Motion and Balance
Touch and Pain
Myths – ifats dot feel pai; ifats feel ut at react to pain; infants have no memory of pain
• there are negative effects of pain killers on babies
Pain perception in newborn – Igorig a ays pereptio of pai a hae log-term effects on their behavior
• early exposure to pain has possible long-term consequences as it can damage neuron development
o have behavioral consequences i.e ADHD which increases sensitivity to pain
Techniques to help infants/children cope with pain – sucrose, happy facial expressions, high vocal tone, distraction
• for years, medical practice performs neonatal surgical procedures w/o anesthesia
Two-point perception test – use a compass to determine the smallest distance a person can determine the two
points of touch on their skin
Acquisition of Tactile Skills
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
I(cid:374)(cid:448)estigate per(cid:272)eptio(cid:374) (cid:271)y (cid:448)isi(cid:271)le, o(cid:271)ser(cid:448)a(cid:271)le respo(cid:374)ses (cid:894)(cid:272)a(cid:374)(cid:859)t do (cid:448)er(cid:271)al (cid:449)ith babies) Preferential looking infants have spontaneous looking preferences for certain types of stimuli. Habituation an individual reacts with less and less intensity to a repeatedly presented stimulus applies to a variety of physiological responses sucking, heart rate, breathing, orienting response, eye movements. Cortical evoked potential visual evoked potentials, measure brain responses of visual stimuli; stimuli that are resolved will elicit a vep (brain wave patterns) Development of touch and pain, smell, taste, motion and balance. Myths i(cid:374)fa(cid:374)ts do(cid:374)(cid:859)t feel pai(cid:374); i(cid:374)fa(cid:374)ts feel (cid:271)ut (cid:272)a(cid:374)(cid:859)t react to pain; infants have no memory of pain there are negative effects of pain killers on babies. Techniques to help infants/children cope with pain sucrose, happy facial expressions, high vocal tone, distraction for years, medical practice performs neonatal surgical procedures w/o anesthesia. Two-point perception test use a compass to determine the smallest distance a person can determine the two points of touch on their skin.
