Mod 9.2 Flashcards by Oisin Tyrrell | Brainscape

Q

Cornea

A

Focusing

70-80% Refraction

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Q

Iris and Pupil

A

Pupil changes size to control light in

5:1

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Q

Lens

A

Changes shape ( Accommodation ) via Cillary Muscles

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Q

What is cillary muscles function

A

Lens Accomidation

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Q

Retina

A

Rear wall

Cones and Rods

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Q

Cones

A

Central

Colour

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Q

Rods

A

Outside

Dark Lighting

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Q

Short sight other name

A

Myopia

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Q

What lenses used for Short sight

A

Concave

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Q

Long sight other name

A

Hypermetropia

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Q

What lens used for Long sight

A

Convex

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Q

Outer Ear

A

Funnels sound to Ear Drum

Ear Drum vibrates

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Q

Middle Ear

A

Ossicles transmit Vibrations from EarDrum

Acoustic + Aural Reflex ( 80db 15 mins )

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Q

Inner Ear

A

Fluid

Cochlea gets vibrations from Ossciles

Vibrations changed to Neural

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Q

Ear hears frequency’s from

A

20 Hz to 20,000 Hz

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Q

Ear vulnerable to frequencys of

A

1000-4000 Hz

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Q

Selective Attention

A

Several inputs

Focus on one more than others

Q

Divided Attention

A

One or more input at same time

Q

Focused Attention

A

Single input

Q

Sustained Attention

A

Single input for long time

Q

Perception

A

Data to Info

Q

Confirmation Bias

A

Seeing what you want to see

Data lost without being precieved

Q

Registration or Encoding

A

Input to Memory

Q

Storage

A

Retention of Info in Memory

Q

Retrieval

A

Recovering Info from Memory

Q

What is Sensory Memory

A

Ultra Short Term Memory

Q

How long is Ultra Short Term Memory info stored

A

2 seconds

Q

Short term Memory

A

5-9 pieces

For 10-20 seconds

Chunks, Rehearsal

Q

Long Term Memory

A

Unlimited

Semantic = Basic Info

Episodic = Experiences

Q

Motor Programs

A

Memory of skills used without thought

EG : Driving

Q

Situation Awareness

A

Perception

Comprehension

Projection

Q

NIHL definition

A

Noise Induced Hearing Loss

Q

What influences NIHL

A

Intensity and Duration

Q

At what Db level must hearing protection be worn

A

115 db for any length of time

Q

What is Noise Dose

A

Combination of Duration and Intensity

Any sound over 80 dB

Measured as TWA

Q

What does TWA stand for

A

Time Weighted Average

Q

Recommend Max TWA

A

90 dB

Q

What is Presbycusis

A

Hearing deteriorating in ages of over 30

Q

Two types of Sensory Memory

A

Echoic and Ionic

Q

Echoic

A

Ultra Short Term Memory

Hearing

2-8 seconds

Q

Ionic

A

Ultra Short Term Memory

Visual

0.5 - 1 second