CAPD clinical categories
DISORDERS OF PHONEMATICAL HEARING
DISORDERS OF LISTENING AND HEARING IN NOISE
(difficulties in understanding speech):
DISABILITY OF VISUAL AND HEARING INTEGRATION
• abnormal functioning of the nerve structures of the posterior temporal lobe of the hemisphere, responsible for correct speech organization (the left hemisphere);
• disruption of the decoding function of the acoustic features of speech sounds allowing the distinction of phonemes (phonological type errors, e.g. replacing the phoneme /d/ with the phoneme /t/)
• difficulty in differentiating speech sounds;
• difficulties in reading and writing;
• frequent speech defects.
Hearing disorders at the phonological level are the most common form of central hearing disturbances (50%).
• impaired function of the frontal lobe, including the Broca’s region;
• poorly functioning short-term auditory memory;
• difficulties in understanding speech in unfavorable acoustic conditions;
• impaired attention of hearing concentration;
• active speech disorders―poor vocabulary, incorrect grammatical forms;
• therapy: listening training with active application of the Johansen, Tomatis, and/or Warnke methods, as well as the Neuroflowone―active hearing training;
• FM system―hearing aids or different types of hearing help equipment.
Auditory attention disorders account for 30% of central hearing disorders. They show similarity to ADD and ADHD.
• Impaired function of the corpus callosum and structures of the right cerebral hemisphere;
• Difficulties in assessing and actively using prosodic speech features;
• Difficulties in understanding speech in unfavorable acoustic conditions;
• Problems with the location of the sound source;
• Problems with visual-hearing-motor coordination;
• Reading and writing disorders (taking notes, writing dictations);
Possible forms of therapy: ear training, SI therapy, speech therapy.