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Maturation of the Central Auditory Nervous System in Children with Auditory Processing Disorder, presented in partnership with Seminars in Hearing

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1.  When tracking the development of the CANS using the CAEP, the following latency changes have been documented over time:
  1. Reduction in P1 latency only
  2. Increase in N1 latency only
  3. Decrease in P2 latency only
  4. Reduction of P1 and N1 latencies only
2.  When tracking the development of the CANS using the CAEP, the following amplitude changes have been documented over time:
  1. P1 amplitude reduction only
  2. N1 amplitude reduction only
  3. N1 amplitude increase
  4. Reduction of all component amplitudes
3.  Behaviors often associated with APD include:
  1. Difficulty hearing speech in noise
  2. Literacy development difficulties
  3. Attention difficulties
  4. All of the above
4.  This study finds that children diagnosed with APD demonstrate:
  1. Absent CAEPs
  2. Larger amplitude CAEPs compared to peers in all waves
  3. Smaller amplitude and increased latency in the earlier CAEP waves compared to peers
  4. No significant difference in CAEPs compared to peers
5.  This study compares the CAEPs in children diagnosed with APD to peers, and the findings suggest that:
  1. There are no cortical differences between the two groups
  2. Children with APD have absent CAEPs
  3. Children with APD have a neuro-developmental delay
  4. CAEPs provide a diagnostic tool for APD
6.  The CAEP of infants and children is a useful clinical tool to:
  1. Diagnose neurological delays
  2. Track maturation of the auditory cortex following cochlear implantation
  3. Diagnose APD
  4. All of the above
7.  This study compared the cognitive abilities of children diagnosed with APD to peers, and the findings suggest that:
  1. Children with APD, as a group, have stronger attention ability, but poorer memory
  2. Children with APD, as a group have weaker attention and working memory ability
  3. Children with APD, as a group, have stronger memory ability, but poorer attention
  4. There are no cognitive differences between the two groups
8.  Cognitive maturation:
  1. Follows similar timelines of development as the Auditory Processing skills but not the CANS
  2. Follows similar timelines of development as the CANS but not Auditory Processing skills
  3. Is complete by the age of seven
  4. Follows similar timelines of development as the Auditory Processing skills, the CANS and the CAEP
9.  Regarding interhemispheric transfer of information, children with APD:
  1. Show poorer performance on tasks requiring interhemispheric transfer of information
  2. Show superior performance on tasks requiring interhemispheric transfer of information
  3. Show equal performance on tasks requiring interhemispheric transfer of information as age-matched peers without APD
  4. Demonstrate better performance on the DDT than age-matched peers.
10.  The P2 component of the CAEP:
  1. Shows similar morphological changes with age as the P1 wave
  2. Is the first component of the waveform to emerge during childhood
  3. Is an obligatory response
  4. Is influenced by sensory modalities such as attention

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