This part of the exam contains 50 multiple choice questions, each worth 2 points. ning Question 5 2 pts Understanding the location of objects in the visual field and their movements involves which of the following brain regions: ventral visual pathway posterior visual pathway inferior visual pathway dorsal visual pathway
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Sri K.
34. The visual pathway: i. Can you distinguish between the optic nerve, optic tract, and optic chiasm? ii. Which lobe of the brain is responsible for vision? iii. The visual field consists of a right and left visual field. 1. The optic nerve of the left eye can see which part(s) of the visual field? 2. The optic tract of the left eye can see which part(s) of the visual field?
Adi S.
Higher forebrain visual structures (such as superior colliculus, LGN; V1) receive input from both eyes but only from the contralateral visual field. A patient has damage to the visual system that results in blindness in the periphery of both the left and right visual fields, where might the damage lie? - Left optic nerve - Left optic radiations - Right optic tract - Optic tract Which of the statements about rods is false? - Rods are specialized for high acuity vision - Rods are achromatic (black and white) - Rods are rare in the fovea - Rods are highly sensitive to light - There are about 120 million rods in the retina A lesion in the hand representation area of the primary motor cortex of the left hemisphere would be expected to cause: - Weakness or complete paralysis of the right hand - Weakness or complete paralysis of the left hand - Loss of the ability to perform complex tasks with the left hand - Loss of the ability to perform complex movement sequences with the right hand, without paralysis - None of the above Which of the following statements about the visual system is false? - Both ON- and OFF-center retinal ganglion cells are stimulated by the same spot of light simultaneously - Nasal hemiretina axons project contralaterally, while temporal hemiretina axons project ipsilaterally - The retinal ganglion cells are the only cells that directly respond to light - Receptive fields can overlap - Horizontal cells make lateral connections between photoreceptor cells
Suman K.
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