Lectures 6 & 7: An Overview of CAPD & Professional Guidelines Flashcards
what is CAPD
Complex & heterogeneous disorder. It is a sensory processing deficit that commonly impacts listening, spoken language, comprehension, and learning. When auditory skills are weak, children may experience auditory overload. CAPD is an input disorder that impedes selective and divided auditory attention. Most Children with auditory processing problems have normal intelligence and normal hearing sensitivity.
ASHA 1996 Defined auditory processing in terms of performance on a specific group of auditory tasks including
Perception of sound (first step)
Clarification of sound
Localization and lateraliztation of sound
Attending to sound
Analyzing, storing, retrieving information (memory)
Integration of message (what is the message, any visuals associated with it)
Auditory performance with competing and degraded acoustic signals
asha 1996 processes of temporal features of sound include
Temporal integration or summation (combing or adding sounds)
Temporal resolution or discrimination (GDT - how big does the gap have to be to recognize there are 2 signals and not one)
Large gap = poorer GD
Smaller gap = better GD
Temporal ordering or sequencing (like with phone numbers, addresses, passwords etc.)
Temporal masking (forward and backward)
what was ASHA’s technical report 2005
CAPD refers to the efficiency and effectiveness in which the CANS utilizes auditory information
how efficiently do you proess sounds you are getting from the periphery
Certain auditory skills develop in a sequence but they are also interconnected and contribute to effective auditory processing as a whole based on
Depends on neuromaturation (auditory skills improve as a child’s brain matures and impacts how they can process sounds)
Children need a 10-15 dB SNR w/ typical hearing
Children with HL needs 20-25dB SNR
what is sensation
ability to identify the presence of sound
Have to realize there is sound in the environment before you can do anything with it
localization
where the sound is coming from
Auditory resolution/discrimination
Ability to discriminate between sounds that differ in frequency, duration, and intensity
Ability to discriminate between sounds that differ in frequency, duration, and intensity
auditory resolution/discrimination
problems with auditory resolution/discrimination
Problems with auditory discrimination can result in academic difficulty such as following directions, reading, spelling, and writing skills
ability to attend to relevant acoustic signals, such as speech and sustain that attention for an age-appropriate amount of time
auditory attention
auditory attention
ability to attend to relevant acoustic signals, such as speech and sustain that attention for an age-appropriate amount of time
ability to identify the primary linguistic or non-linguistic sound source from background noise
auditory figure ground
auditory figure ground
ability to identify the primary linguistic or non-linguistic sound source from background noise
For example, in a classroom, the teacher’s voice is the primary signal other sounds/noises in the room are the competing noise
Ability to understand whole word or message when part is missing
Helps to fill in the blanks and understand the messages
Easier for adults with rich language base/experience than children who are building language skills
auditory closure
auditory closure
Ability to understand whole word or message when part is missing
Helps to fill in the blanks and understand the messages
Easier for adults with rich language base/experience than children who are building language skills
Important for distinguishing verb tenses and other morphological markers that may be acoustically distorted or masked by background noise
auditory analysis
Important for distinguishing verb tenses and other morphological markers that may be acoustically distorted or masked by background noise
auditory analysis
smallest unit of speech sound used to form meaningful contrasts between utterances
phoneme
smallest unit of meaning in a language; doesn’t have to be a word
Morpheme:
fxns as the foundation of language
morphem
Ability to blend phonemes into words
Critical for reading
auditory synthesis
auditory synthesis
Ability to blend phonemes into words
Critical for reading
Ability to attach meaning to sound
Fundamental for developing auditory memory
auditory association
auditory association
Ability to attach meaning to sound
Fundamental for developing auditory memory
Recall of an acoustic signal after it has been labeled and stored
Requires remembering and recalling various acoustic stimuli of different lengths & numbers
Overall memory issues can affect this
auditory memory
auditory memory
Recall of an acoustic signal after it has been labeled and stored
Requires remembering and recalling various acoustic stimuli of different lengths & numbers
Overall memory issues can affect this
auditory sequential memory
ability to recall order of a series of acoustic stimuli
ability to recall order of a series of acoustic stimuli
auditory sequential memory
ability to retain and recall auditory information as it is immediately presented
auditory short term memory
auditory short term memory
ability to retain and recall auditory information as it is immediately presented
temporal integration
ability of the auditory system, specifically the auditory nerve and CANS, to integrate inputs over time, which in a variety of real-world circumstances, enhances the detection and/or discrimination of a sound
ability of the auditory system, specifically the auditory nerve and CANS, to integrate inputs over time, which in a variety of real-world circumstances, enhances the detection and/or discrimination of a sound
temporal integration
Lowest absolute threshold
200-300ms
Tenfold increase in duration
10dB improvement in threshold
Tonal durations >300ms doesn’t improve threshold due to
adaptation
detection of small timing differences when processing speech
temporal resolution