lecture 13-speech and language disorders

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Illustrations and examples of speech and language disorders with some background of their physiological base.

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  • Speech: Verbal means of communicatingSpeech soundsFluency (rhythm of speech)Voice (using VFs and breathing to produce speech sounds)Language: Socially shared rules (Symbolic; meaningful)Word meanings

    How to make different words (friend vs. friendly)

    Putting words together (syntax)

  • Speech Disorder

    Inability to produce sounds correctly or fluently

  • Language Disorder

    Trouble understanding others (receptive language disorder)

    Trouble expressing ideas, thoughts, and feelings (expressive language disorder)

    Language disorders & speech disorders can exist together or separately

  • Motor speech disorder

    Caused by neurological damage (typically from stroke). TBI, dementia, tumor, and progressive neurological disorders can also lead to Apraxia of Speech.)

    Severity depends on nature of brain damage

  • Linguistic expression is in tact (people with apraxia know what they want to say)

    Difficulty with muscle movement coordination (cannot say the words they want to say)

    Make frequent tries and re-adjustments (motor plan is not in tact; constantly grope for correct set of movements for given word)

  • Difficulty imitating speech sounds

    Difficulty imitating non-speech movements (whistling, sticking out tongue, blowing bubbles)

    Groping for correct motor patterns when trying to produce sounds

    Inconsistent errors

    Slow speech rate

    Preserved ability to produce automatic speech

    Most severe cases: inability to produce any speech

  • Muscle retrainingCorrect production of soundsSequencing sounds into words

    Intensive repetition

    Awareness of correct mouth movements

    Severe casesAugmentative and alternative communicationGesturesElectronic equipment

  • In most cases cause is unknown

    Possible causes

    Genetic component?

    Stroke or brain injury

  • 3 yr. old girl

    Started therapy at 2 yrs.

    http://www.youtube.com/watch?v=szjfC9K190U&feature=fvw4 yr. old (same girl)

    Continued therapy

    http://www.youtube.com/watch?v=Lvl78dcXGp8&feature=relatedhttp://www.youtube.com/watch?v=Lvl78dcXGp8&feature=relatedMore severe case:

  • Motor speech disorder

    Results from neurologic injury

    Characterized by poor articulation

    A disorder of muscle weakness (muscle of face, mouth, and/or respiratory system may be affected)

  • "Slurred" speech

    Speaking softly or barely able to whisper

    Slow rate of speech

    Rapid rate of speech with a "mumbling" quality

    Limited tongue, lip, and jaw movement

    Abnormal intonation (rhythm) when speaking

    Changes in vocal quality ("nasal" speech or sounding "stuffy")

    Hoarseness

    Breathiness

    Drooling or poor control of saliva

    Chewing and swallowing difficulty

  • Slowing speech rate

    Improving breath support

    Strengthening muscles

    Increasing mouth, tongue, and lip movement

    Improving articulation (for clearer speech)

    Educating family members and care givers

    Severe cases: alternative means of communicationGestures, alphabet board, electronics

  • http://www.youtube.com/watch?v=EHNSBo3SsmYWhat do you notice?

  • A disorder of language

    Neurological damageStroke, tbi, tumor

    Understanding and expression of language impaired

    May co-occur with dysarthria and/or AOS

    Two broad types: fluent & nonfluent

  • Left temporal lobe damage (Wernickes area damaged)

    Signs/symptomsLong sentences; no meaning

    Addition of unnecessary words / non-words

    You know that smoodle pinkered and that I want to get him round and take care of him like you want before.

    Difficulty understanding speech

    Unawareness of errors

  • http://www.youtube.com/watch?v=aVhYN7NTIKU&feature=relatedWhat do you notice?

  • Damage to frontal lobe of brain (including Brocas area)

    Speak in short phrases (produced with great effort)

    Omission of function words (is, and, the, etc.)

    Usually fairly good language comprehension

    Often aware of their difficulties

    Ex: Walk dog meaning I will take the dog for a walk.

  • http://www.youtube.com/watch?v=f2IiMEbMnPM&feature=related

    http://www.youtube.com/watch?v=1aplTvEQ6ew&feature=relatedWhat do you notice?

  • Abnormal prosody

    Results from damage to right hemisphere (the non-dominant hemisphere for language)

    Can be Expressive (produce inappropriate prosody)Receptive (cant interpret prosody of others)

  • Language tied to MEANING, speech is NOT.

    Hesitation/stuttering can affect fluency*Automatic speech: how are you?**