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Flight Physiology Test #2 > Vestibular and Visual Systems > Flashcards

Vestibular and Visual Systems Flashcards

1
Q

Spatial Disorientation?

A

Leading cause of (CFIT)

90% spatial disorientation are fatal

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2
Q

3 components of human orientation?

A

Visual Systems
Proprioception
Vestibular System

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3
Q

What is Vestibular System?

A

Organ behind the ear that detect motion

Cannot detect steady motion (Adapt to earths motion)

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4
Q

Functions of Vest. Sys.?

A

Maintaining orientation to surrounding
Assisting balance and movement
Coordinates eye movement

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5
Q

Components of Vest. Sys.?

A

Otoliths- Straight line

3 Semicircular Canals- Detect rotation

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6
Q

How does Vestibular work?

A

Fluid motion detects motion after lag behind body movement

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7
Q

Bad things about Vest.?

A

Movement can occur body can’t detect

Not acknowledged by brain

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8
Q

When steady state motion is altered?

A

Sensation of opposite motion

False sensations

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9
Q

Oculo?

A

Eyes

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10
Q

Somato?

A

Body

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11
Q

Gyric?

A

Turning motion

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12
Q

Gravic

A

Straight line motion

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13
Q

When angular acceleration goes undetected?

A

3 degrees or less per second

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14
Q

Types of vision?

A

Central

Periphrial

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15
Q

Blind Spots?

A

Day- Off center

Night- Central to both eyes

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16
Q

Central vision responsible for?

A

Best vision, color, rapid focus ability

17
Q

Periphrial vision responsible for?

A

Your own motion, motion of objects

18
Q

Common visual illusions?

A

Lights as references
False vertical and horizontal motion
Autokeneis

19
Q

What is effecting scanning?

A

Move eyes in increments side to side side to front etc.

1 to 2 seconds

20
Q

What is Autokenesis?

A

Single lights in the dark are hard to perceive, if you stare it’ll look like its moving

21
Q

How to defeat autokenesis?

A

Dont stair into light, scan in triangle

22
Q

Amount of info from the eyes?

A

90%

Flight Physiology Test #2 (3 decks)

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