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Pediatric Audiology > Auditory Development > Flashcards

Flashcards in Auditory Development Deck (10)
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1
Q

Why do children detect high frequencies better? About what what age is detection level about the same?

A

Smaller ear canals, and because the tympanic membrane is mass dominated at this stage; 6-12 months

2
Q

Small ear canals contribute to high F how?

A

The smaller tube creates smaller wavelengths thus intensifying high frequencies

3
Q

Mass dominated TM contribute to high F how?

A

the mass dominated impedance prefers high F, although low F vibrate the TM more.

4
Q

Auditory response birth - 4months

A

The startle response is normal at this age to intensities of 65 dB. Moro reflex.

5
Q

Auditory response 3-4 months

A

slow head turn to one side ; can parse out suprasegmental aspects of sound

6
Q

Auditory response 4-7 months

A

can do a head turn to one side, should be able to lift the head and shoulders, by 7 mo. should start turning head in both directions (lateral plane only) should sit without support at 7 mo.

7
Q

Auditory response 7-9 months

A

Can start doing VRA. The infant should be consistent with head turns to either side. may start babbling (6 months). Can sit up without assistance

8
Q

Auditory response 9-13 months

A

At the end of the 13 mo. the child should be able to localize in all directions (lateral and elevation). At 12 mo. full maturation of auditory system.

9
Q

CNS dysfunction

A

Infants with CNS dysfunction are not able to habituate to sounds in their environment, get startled every time.

10
Q

Canonical babbling

A

Appears at 5-6 months; well defined mature syllables, clear vocal sound w/consonant margins, not associated with meaning yet

I.e. marginal babbling