Vision No.4

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Questions and Answers

What is the term called when we let our eyes follow the movement of light.

  • Smooth motion
  • Descending
  • Tracking (correct)
  • Vision

Sherrington proposed

  • We monitor the movement of our eye muscles (correct)
  • We monitor the neural activity in the retina
  • We monitor the neural activity in the cortex
  • We minimise the impact of visible light on our retina

There are routes to perceiving movement: retinal movement system and eye-head movement system

True (A)

In Helmholtz model what is the term used when we take a copy of the signal to move our eyes?

<p>Efferent copy or collorary discharge (D)</p> Signup and view all the answers

Helmholtz proposed that we compare signals from the brain and eye muscle movement rather than retinal image motion and eye muscle movement (Sherrington's model)

<p>True (A)</p> Signup and view all the answers

What happens when we stare at the same motion for a period of time?

<p>A direction specific threshold is reached. (C)</p> Signup and view all the answers

Why do people drive faster in foggy conditions?

<p>Reduction in contrast lead to perceiving that we are driving slower. (A)</p> Signup and view all the answers

What is apparent motion?

<p>Stationary images presented in a rapid succession lead to the brain interpreting them as smooth motion (C)</p> Signup and view all the answers

Where does V5 (MT) receive motion information?

<p>Magnocellular layers of the LGN (D)</p> Signup and view all the answers

Experiments using the optokinetic drum measures

<p>Vection (A)</p> Signup and view all the answers

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