SIO2002 Neurophysiology And Binocular Vision at University Of Huddersfield | Flashcards & Summaries

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Lernmaterialien für SIO2002 Neurophysiology and Binocular vision an der University of Huddersfield

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TESTE DEIN WISSEN

what are the three stages of successful binocular vision

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TESTE DEIN WISSEN
  1. simultaneous perception- appreciating 2 retinal images at the same time
  2. fusion- creating a single percept from the images
  3. stereopsis- extracting depth information from the two images
Lösung ausblenden
TESTE DEIN WISSEN

what is the advantage of anomalous retinal correspondence over suppression

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TESTE DEIN WISSEN

the patient retains some stereopsis

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TESTE DEIN WISSEN

what is a monocular adaptation for heterotropia

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TESTE DEIN WISSEN

eccentric fixation

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TESTE DEIN WISSEN

how can suppression lead to diplopia 

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TESTE DEIN WISSEN

the visual system requires imput to develop normally if the input is not there due to suppression the neurons responsible for processing the information cannot develop leading to poor vision in the eye

Lösung ausblenden
TESTE DEIN WISSEN

what is crossed and uncrossed diplopia

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TESTE DEIN WISSEN

crossed- image is infront of the horopter within panums fusional area so it is perceived as being closer in space

uncrossed- image is behind the horopter within panums fusional area so it is perceived as being further away in space

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TESTE DEIN WISSEN

name the 2 types of ocular misalignments 

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TESTE DEIN WISSEN

heterotropia and heterophoria

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TESTE DEIN WISSEN

what are the potential barriers to fusion

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TESTE DEIN WISSEN
  • congenital cataracts
  • congenital ptosis
  • heterotropia
  • higher refractive error in one eye
  • hairstyles
Lösung ausblenden
TESTE DEIN WISSEN

what would be considered excellent stereoacuity

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TESTE DEIN WISSEN

15-30 seconds of arc

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TESTE DEIN WISSEN

why do we measure stereopsis

Lösung anzeigen
TESTE DEIN WISSEN
  • good for measuring in children
  • stereopsis is affected by many factors so good stereopsis rules out any of the problems 
Lösung ausblenden
TESTE DEIN WISSEN

what happens when images do not fuse and why 

Lösung anzeigen
TESTE DEIN WISSEN

there is

  • confusion
  • rivalry

the 2 images are in competition with each other to be perceived as being straight ahead so there will be flickering as the train moves perception from one object to the other 

Lösung ausblenden
TESTE DEIN WISSEN

what are the binocular adaptations due to heterotropia

Lösung anzeigen
TESTE DEIN WISSEN
  1. suppression
  2. anomalous retinal correspondace
Lösung ausblenden
TESTE DEIN WISSEN

describe the innervation of pupil constriction

Lösung anzeigen
TESTE DEIN WISSEN
  • contraction of the sphincter 
  • efferent 
  • parasympathetic 
Lösung ausblenden
  • 5974 Karteikarten
  • 191 Studierende
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Beispielhafte Karteikarten für deinen SIO2002 Neurophysiology and Binocular vision Kurs an der University of Huddersfield - von Kommilitonen auf StudySmarter erstellt!

Q:

what are the three stages of successful binocular vision

A:
  1. simultaneous perception- appreciating 2 retinal images at the same time
  2. fusion- creating a single percept from the images
  3. stereopsis- extracting depth information from the two images
Q:

what is the advantage of anomalous retinal correspondence over suppression

A:

the patient retains some stereopsis

Q:

what is a monocular adaptation for heterotropia

A:

eccentric fixation

Q:

how can suppression lead to diplopia 

A:

the visual system requires imput to develop normally if the input is not there due to suppression the neurons responsible for processing the information cannot develop leading to poor vision in the eye

Q:

what is crossed and uncrossed diplopia

A:

crossed- image is infront of the horopter within panums fusional area so it is perceived as being closer in space

uncrossed- image is behind the horopter within panums fusional area so it is perceived as being further away in space

Mehr Karteikarten anzeigen
Q:

name the 2 types of ocular misalignments 

A:

heterotropia and heterophoria

Q:

what are the potential barriers to fusion

A:
  • congenital cataracts
  • congenital ptosis
  • heterotropia
  • higher refractive error in one eye
  • hairstyles
Q:

what would be considered excellent stereoacuity

A:

15-30 seconds of arc

Q:

why do we measure stereopsis

A:
  • good for measuring in children
  • stereopsis is affected by many factors so good stereopsis rules out any of the problems 
Q:

what happens when images do not fuse and why 

A:

there is

  • confusion
  • rivalry

the 2 images are in competition with each other to be perceived as being straight ahead so there will be flickering as the train moves perception from one object to the other 

Q:

what are the binocular adaptations due to heterotropia

A:
  1. suppression
  2. anomalous retinal correspondace
Q:

describe the innervation of pupil constriction

A:
  • contraction of the sphincter 
  • efferent 
  • parasympathetic 
SIO2002 Neurophysiology and Binocular vision

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