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Neurology SOH > Auditory and Visual pathways > Flashcards

Auditory and Visual pathways Flashcards

1
Q

Where is the primary auditory cortex located?

A

Temporal lobe in the superior temporal gyrus

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2
Q

Which 2 nuclei are important in sound localisation?

A

Superior olivary nucleus

Nucleus of lateral lemniscus

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3
Q

Fibres carrying information regarding HIGH/LOW frequency sounds end in the anterolateral part of the auditory cortex?

A

Low

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4
Q

Fibres carrying information regarding HIGH/LOW frequency sounds end in the posteromedial part of the auditory cortex?

A

High

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5
Q

If the patient is deaf in one ear, the pathology is in the brainstem. True or false?

A

False

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6
Q

Where is the primary visual cortex located?

A

Occipital lobe

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7
Q

Medial geniculate nucleus of the thalamus - auditory/visual information ?

A

Auditory

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8
Q

Lateral geniculate nucleus of the thalamus - auditory/visual information ?

A

Visual

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9
Q

What controls movements in response to visual stimuli (e.g. tracking moving objects)

A - frontal eye fields
B - visual cortex

A

Visual cortex

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10
Q

What controls movements of command ?

A - frontal eye fields
B - visual cortex

A

Frontal eye fields

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11
Q

Movements in response to visual stimuli are usually smooth/saccadic?

A

Smooth

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12
Q

Movements of command are usually smooth/saccadic?

A

Saccadic

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13
Q

Depending on how hair cells bend, they release neurotransmitter. True or false?

A

True

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14
Q

What is the major excitatory neurotransmitter of the brain?

A

Glutamate

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15
Q

Which neurotransmitter do hair cells release?

A

Glutamate

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16
Q

Auditory pathway - when K+ channels are open, K+ ENTERS/LEAVES the cell?

A

Enters
- K+ usually leaves the cell when K+ channels are open. However, the electrochemical gradient in the auditory pathway is different

17
Q

The K+ entry results in MORE/LESS release of glutamate ?

A

More

18
Q

Auditory pathway - what is the function of the superior olivary nucleus?

A

Locate sound sources in space

19
Q

What is the name for the spatial arrangement of where sound of different frequencies are processed in the brain?

A

Tonotopy

20
Q

Vestibulo ocular reflex VOR

A

Keeps the eyes still in space whilst the head moves

Eyes move in opposite direction to head movement

21
Q

Alcohol can cause vestibular system dysfunction. True or false?

A

True

Neurology SOH (31 decks)

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