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Tue 20 May 2014 11:14 PM CDT
15.00
18.00
Which of the following is a binocular distance cue?
Your Answer Score
Linear Perspective
Blur/Haze
Motion Parallax
1.00
Convergence Angle
Correct
Frequency Polarization
Total 1.00 / 1.00
Which of the following is NOT a difference between blur/haze and focus/ accommodation?
Your Answer
Blur/haze provides information about image distance in kilometers whereas focus/accommodation provides
Explanation
Score Explanation

information about image distance in meters.
Blur/haze contributes to image clarity whereas focus/accommodation does not.
Focus/accommodation requires changes in lens curvature while blur/haze does not involve changes in lens curvature.
Inorrect 0.00
Blur/haze utilizes color to determine distance while focus/accommodation does not.
Total 0.00 /
1.00
______________ involves comparing the locations of an object’s images on the retina of each eye to estimate the object’s distance.
Your Answer Score
Blur/Haze
1.00
Stereovision
Correct
Accommodation
Linear Perspective
Total 1.00 / 1.00
Explanation

The activity of a Golgi Tendon Organ depends primarily on
Your Answer
The force applied by the muscle to the tendon
The length of the muscle
The angle of the joint
All of the above
Total
The activity of a Muscle Spindle Receptor depends primarily on _____.
Your Answer
The force applied by the muscle to the tendon
The length of the muscle
The angle of the joint
Correct
Score
1.00
1.00 / 1.00
Explanation
Correct
Score
1.00
Explanation

All of the above
Total
TRUE or FALSE: The size and shape of action potentials determine the type of information the action potentials are passing along.
Your Answer Score
TRUE
Correct 1.00
FALSE
Total 1.00 / 1.00
On the action potential graph below, what is happening during the ascending limb (see highlighted region in diagram) of the action potential?
Your Answer Score
Potassium channels are closing
Sodium channels are closing
1.00 / 1.00
Explanation
Explanation

Correct 1.00
Sodium channels are opening
Potassium channels are opening
Total 1.00 / 1.00
How does sodium influx affect the membrane potential?
Your Answer
Correct
Score
1.00
Makes it more positive.
Makes it more negative.
Does not change it.
Equalizes it.
Total 1.00 / 1.00
All of the following are reasons that the membrane potential starts to descend (see diagram below)
EXCEPT
Your Answer Score
Explanation
Explanation

Sodium channels are being inactivated.
Potassium channels are beginning to open.
Sodium channels are beginning to open.
All of the above are true.
Total
What do vibrations simulate when applied to a muscle?
Your Answer
Correct
They give the illusion of being numb; it seems like no movement is taking place even though it is.
1.00
1.00 / 1.00
They give the illusion of stretching, even though the muscle has not changed position.
Score Explanation
Correct 1.00
They give the illusion of force, even though there is no tension on the muscle.
They give the illusion of displacement; it feels like a movement occurring in one part of the body is happening in another.
Total 1.00 /
1.00

Based on the “Crossed Hands” experiment, while holding one vibrating device in, where would the initial eye gaze be directed if the hands are crossed and the vibration occurs in the right hand?
Your Answer
Always to the left, i.e. to the correct hand
Usually to the middle, between the two hands
Sometimes to the right, i.e. to the wrong hand
No eye movements are made in response to the vibration
Total
Score
Correct 1.00
1.00 / 1.00
Explanation

An experimenter wears prism goggles that shift the view slightly to the right. She then throws bean bags towards a target with one hand until she hits the target with relative consistency. She takes off the goggle and tries to throw one bean bag with her other hand. What would most likely happen?
Your Answer
She would throw the bean bag slightly to the right of the target
Score
Inorrect 0.00
The answer can’t be predicted from the information provided.
She would throw the bean bag slightly to the left of the target
She would throw the bean bag relatively to the center, towards the target
Total 0.00 / 1.00
Explanation
Pick the distance cue that matches the description below: When an observer moves, objects that are farther away from an observer appear to move less than objects that are closer.
Your Answer Score
Relative Size
Occlusion
Shape from Shading
Explanation

Motion Parallax
Inorrect 0.00
Accommodation
Total 0.00 / 1.00
Pick the distance cue that matches the description below: Because a tree trunk is blocking your view of a building behind the tree trunk, you assume that the tree trunk is closer to you than the building.
Your Answer Score
Shape from Shading
Motion Parallax
Accommodation
Occlusion
Relative Size
Total
Correct 1.00
1.00 / 1.00
Pick the distance cue that matches the description below: Assuming that light is coming from above allows you to determine from the pattern of shadows whether an object is concave or convex.
Explanation

Your Answer
Occlusion
Accommodation
Shape from Shading
Relative Size
Motion Parallax
Total
Correct
TRUE or FALSE: Depth perception can be performed either using one eye or using two eyes.
Your Answer Score
Correct 1.00
TRUE
FALSE
Total 1.00 / 1.00
Electrical potentials in neurons are a consequence of:
Score
1.00
1.00 / 1.00
Explanation
Explanation

Your Answer
Concentration gradients
Electrical gradients
Neural membranes leak some ions more than others (via ion channels)
All of the above
Total
An individual photon ultimately affects:
Your Answer
Any of the above can happen, depending on the type of photon
One photopigment molecule leading to an impact on one ion channel
One photopigment molecule leading to an impact on many ion channels
Many photopigment molecules which team up to affect one ion channel
Total
Score
Correct 1.00
1.00 / 1.00
Explanation
Score
Correct 1.00
1.00 / 1.00
Explanation