Topic 6 Vision Dr. Kimberley Campbell: Sensation and Perception
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Questions and Answers

What is the role of the Retinohypothalamic tract?

  • Regulating circadian rhythms and pupillary reflex (correct)
  • Processing color and form information
  • Receiving signals from the lateral geniculate nucleus
  • Synthesizing visual information from the occipital cortex

Where does the input from the right half of each retina go?

  • Left LGN
  • Right LGN (correct)
  • Parvocellular cells
  • Occipital Cortex

Which layers in the lateral geniculate nucleus receive input from the ipsilateral retina?

  • 2, 3, and 5 (correct)
  • 1, 4, and 6
  • 1 and 2
  • 3 to 6

What are blobs in the occipital cortex stained for?

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

Where is the Fusiform face area (FFA) located?

<p>Fusiform gyrus below the IT cortex (D)</p> Signup and view all the answers

What is the role of neurons in cortical region V4?

<p>Responsive to various perceived colors (D)</p> Signup and view all the answers

What is the function of the dorsal stream in visual processing?

<p>Grasping objects for action (B)</p> Signup and view all the answers

What is a consequence of injury to the What Pathway?

<p>Visual-form agnosia (A)</p> Signup and view all the answers

What is one of the effects of damaging the How Pathway?

<p>Impaired object grasping ability (C)</p> Signup and view all the answers

Which part of the brain is involved in processing visual information for action?

<p>Posterior parietal cortex (D)</p> Signup and view all the answers

What do lesioning or ablation experiments involve?

<p>Removing or destroying specific brain regions (A)</p> Signup and view all the answers

What type of task was involved in the object discrimination problem in Ungerleider and Mishkin's experiment?

<p>Two-choice task (D)</p> Signup and view all the answers

Which part of the brain was removed in the monkeys that had problems with the landmark discrimination task in Ungerleider and Mishkin's experiment?

<p>Parietal lobe (B)</p> Signup and view all the answers

What is the term used for animals reared in environments with only certain types of stimuli?

<p>Selective rearing (D)</p> Signup and view all the answers

Which perceptual ability was tested to determine the portions of the brain responsible for specific behaviors in animals?

<p>Visual discrimination (C)</p> Signup and view all the answers

What happened when part of the temporal lobe was removed from monkeys in Ungerleider and Mishkin's experiment?

<p>Problems with landmark discrimination (C)</p> Signup and view all the answers

What was the outcome of selective rearing on neurons according to the text?

<p>Increased predomination of responsive neurons (B)</p> Signup and view all the answers

What is the difference between sensation and perception?

<p>Sensation is the stimulation of sense organs by physical stimuli, while perception is the interpretation of that sensory input. (B)</p> Signup and view all the answers

What is the role of Fechner’s law in sensation?

<p>Fechner’s law involves the subjective sensation's relationship with the logarithm of stimulus intensity. (B)</p> Signup and view all the answers

Which area in the eye is specialized for high acuity vision?

<p>Fovea (D)</p> Signup and view all the answers

What causes myopia or nearsightedness?

<p>Refractive errors in how light enters the eye (C)</p> Signup and view all the answers

Which type of retinal cells are specialized for color vision and high visual acuity?

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

What is the role of horizontal cells in the retina?

<p>Links photoreceptors and bipolar cells (C)</p> Signup and view all the answers

In which region of the retina does light energy initiate neural activity?

<p>Retina (B)</p> Signup and view all the answers

What type of pigments are responsible for color vision in bright light?

<p>Cones pigments (D)</p> Signup and view all the answers

What is axial myopia primarily caused by?

<p>Eyeball being too long (C)</p> Signup and view all the answers

How does cortical magnification affect representation in the neocortex?

<p>It causes larger areas of the fovea to be represented on the cortex compared to periphery. (C)</p> Signup and view all the answers

What specialized area in the temporal cortex is activated by pictures of bodies and body parts?

<p>Extrastriate body area (EBA) (B)</p> Signup and view all the answers

Which theory explains why most people who are color blind are dichromats?

<p>Trichromatic Theory (C)</p> Signup and view all the answers

In the lateral geniculate nucleus (LGN), what do neurons have?

<p>Visual fields (D)</p> Signup and view all the answers

Which area is NOT involved in perceiving faces according to the passage?

<p>Extrastriate body area (EBA) (C)</p> Signup and view all the answers

What is the function of Ocular Dominance Columns in the visual cortex?

<p>Respond preferentially to one eye (D)</p> Signup and view all the answers

What is the role of the Corpus Callosum according to the text?

<p>Connects most of the frontal lobes (A)</p> Signup and view all the answers

Which theory explains the phenomenon of afterimages?

<p>Opponent-Process Theory (C)</p> Signup and view all the answers

What type of color mixing removes some wavelengths of light?

<p>Subtractive colour mixing (B)</p> Signup and view all the answers

Which area responds to places but not objects or faces?

<p>Parahippocampal place area (PPA) (B)</p> Signup and view all the answers

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