Deck 6: Sensory Components of Motor Control

Question 1

In the experiment by Spencer and others (2005)in which two sensory neuropathy patients were compared to control participants,the repetitive circles drawn by the patients were:

A) Different from the control participants' circles in size and shape
B) The same as the control participants' circles in size and shape
C) Different from the control participants' circles in all the measured features
D) The same as the control participants' circles in all the measured features

Answer 1

A

Question 2

When you walk across a street,the optical variable tau influences the initiation of your leg movement to step up onto the curb on the basis of the:

A) Distance you are from the curb
B) Amount of time remaining to contact the curb
C) Height of the curb
D) Width of the street

Answer 2

B

Question 3

Proprioceptors are not found in which of the following?

A) Muscles
B) Joints
C) Bones
D) Tendons

Answer 3

C

Question 4

The procedure in which a person's body parts are masked on film or video frames so that they cannot be seen by an observer is known as the:

A) Event occlusion procedure
B) Temporal occlusion procedure
C) Anticipation timing procedure
D) Perturbation procedure

Question 5

Although researchers have reported various findings,the most reasonable estimate of the amount of time required for visual feedback to enable a movement correction during the performance of a simple manual aiming task is:

A) Between 100 and 160 msec
B) Between 500 and 560 msec
C) More than 1000 msec
D) No time is required;corrections are instantaneous

Question 6

The neural aspects of vision begin in which part of the eye?

A) Lens
B) Pupil
C) Cornea
D) Retina

Question 7

If you want to rapidly move the cursor on your computer screen to an icon,when during the movement of the cursor would you shift your visual point of gaze to the icon?

A) As soon as you initiate the cursor movement
B) Just after you initiate the cursor movement
C) Just before the cursor reaches the icon
D) At the same time as you reach the icon

Question 8

The opening in the eye that lets in light is the:

A) Lens
B) Pupil
C) Cornea
D) Retina

Question 9

When you move your arm to reach and grasp a bottle of water that is in front of you on a table,which of the following parts of the movement would be affected if you did not have peripheral vision available?

A) Movement preparation
B) Reaching for the bottle
C) Grasping the bottle
D) Reaching for and grasping the bottle

Question 10

Which of the following movement characteristics is influenced by tactile sensory information?

A) Limb spatial position
B) Accuracy of grasping an object
C) Arm movement direction
D) Movement speed

Question 11

People who type on a keyboard when their fingertips are anesthetized have problems with movement while typing.

Question 12

The greatest concentration of __________ sensory receptors is in the fingertips.

Question 13

Although people can use monocular vision to reach and pick up objects,movement accuracy and efficiency decrease as the:

A) Size of the object decreases
B) Size of the object increases
C) Distance to the object decreases
D) Distance to the object increases

Question 14

According to the hypothesis that there are two visual systems for the control of movement,the visual system that processes visual information in peripheral vision is called the:

A) Static visual channel
B) Kinetic visual channel
C) Feedback visual channel
D) Foveal visual channel

Question 15

Which methods have been used to assess the role of tactile sensory feedback in motor control?

A) Anesthetizing a person's fingertips during performance of a task
B) Adding tactile feedback during performance of a task
C) Anesthetizing a person's fingertips and adding tactile feedback during a task
D) Removing a person's fingertips during performance of a task

Question 16

The neural receptors in the skin that detect tactile sensory information are which type of receptors?

A) Chemoreceptors
B) Proprioceptors
C) Photoreceptors
D) Mechanoreceptors

Question 17

The procedure in which a film simulation of a skilled performance is stopped and the person is asked to indicate the outcome of the performance is known as the:

A) Event occlusion procedure
B) Temporal occlusion procedure
C) Anticipation timing procedure
D) Perturbation procedure

Question 18

In the Lee and Aronson "moving room" experiment,in which the walls moved but the floor did not,which of the following describes what the children did?

A) They stood still realizing the floor wasn't moving
B) They made postural adjustments according to the wall movements
C) They laughed
D) All of these occurred

Question 19

Which of the following receptors provides information about muscle tension or force?

A) Golgi tendon organs
B) Muscle spindles
C) Joint receptors
D) Extrafusal muscle fibers

Question 20

Which of the following techniques that researchers use to study the role of proprioception in motor control does not remove proprioceptive feedback but only distorts it?

A) Surgical deafferentation
B) Nerve block
C) Tendon vibration
D) Sensory neuropathy

Question 21

An important role of proprioceptive feedback in the control of movement is to provide information about the ________ of the movement.

Question 22

The optic nerve fibers associated with the nasal part of the visual field cross over to the opposite hemisphere whereas the fibers associated with the temporal part of the visual field do not cross to the opposite hemisphere.

Question 23

A sensory neuropathy involving a limb provides a non-surgical technique for the investigation of deafferented humans.

Question 24

The clear surface that is the most anterior part of the eye is the.

Question 25

Peripheral vision provides essential information during a discus throw.

Question 26

Monocular vision leads to better interception of a moving object than binocular vision.

Question 27

When a researcher shows a video in which certain parts of a person's movements are masked,the research uses the occlusion procedure for investigating the role of vision in performing motor skills.

Question 28

We are generally consciously aware of the information provided by the ventral visual stream but not aware of the information provided by the dorsal visual stream.

Question 29

Typing accuracy is generally not impaired when tactile sensory feedback from the fingertips is removed.

Question 30

When you are walking on a pathway,central vision provides the information you need to stay on the pathway but peripheral vision provides no important information as you walk.

Question 31

________ perception is enhanced by the availability of binocular vision.

Question 32

The are proprioceptors located within the fibers of most skeletal muscles;they detect changes in muscle length.

Question 33

A person can use visual feedback to correct a movement only when there is a sufficient amount of time to make the correction.

Question 34

The optic nerves from the two eyes meet near the base of the brain and form the optic.

Question 35

When used to refer to vision,the term "perception-action coupling" refers to the coordination between visual perception and limb movement.

Question 36

The optical variable ________ has been shown to influence the control of time-to-contact in locomotor skills.

Question 37

Peripheral vision helps people maintain their postural balance while walking by utilizing patterns of _________ in the environment.

Question 38

In the experiment by Sivak and MacKenzie,when participants' peripheral vision was blocked,the grasping phase of a prehension action was disrupted.

Question 39

The retina is actually an extension of the brain.

Question 40

The rods are the photoreceptors in the retina that respond to low levels of light,whereas cones respond to bright light.

Question 41

Perception-action coupling is confined to the hands and feet.