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Right hemisphere damage rarely causes FAS. The majority of patients with FAS usually present other speech disorders, such as: mutism, aphasia, dysarthria, agrammatism and apraxia of speech. [13] Neurolinguist Harry Whitaker [14] first coined the term foreign accent syndrome in 1982. He originally proposed some criteria that must be present in ...
There can also be some emotional and mental side effects to dysprosody. Each individual has a distinct voice characterized by all the prosodic elements. Once a person loses control of the timing, pitch, melody, etc. of his speech, he can also feel a sense of loss of personal identity, which can sometimes lead to depression. [3]
Thought blocking is a neuropsychological symptom expressing a sudden and involuntary silence within a speech, and eventually an abrupt switch to another topic. [1] Persons undergoing thought blocking may utter incomprehensible speech; they may also repeat words involuntarily or make up new words.
[20] [21] These studies have allowed scientists to begin to investigate how changes to one gene can alter human communication. FOXP2 is the first gene that has been identified that is specifically linked to speech and language production. Mutant alleles of the normal FOXP2 gene have been found to be the cause of severe speech impairments. [20]
Speech disorders affect roughly 11.5% of the US population, and 5% of the primary school population. [5] Speech is a complex process that requires precise timing, nerve and muscle control, and as a result is susceptible to impairments. A person who has a stroke, an accident or birth defect may have speech and language problems. [6]
Frontal lobe disorders may be recognized through a sudden and dramatic change in a person's personality, for example with loss of social awareness, disinhibition, emotional instability, irritability or impulsiveness. Alternatively, the disorder may become apparent because of mood changes such as depression, anxiety or apathy. [1] Examination
For example, the definitions offered by the American Speech–Language–Hearing Association differ from those of the Diagnostic Statistical Manual 4th edition (DSM-IV). [ 4 ] Gleason (2001) defines a communication disorder as a speech and language disorder which refers to problems in communication and in related areas such as oral motor function.
Reduced affect display, sometimes referred to as emotional blunting or emotional numbing, is a condition of reduced emotional reactivity in an individual. It manifests as a failure to express feelings either verbally or nonverbally, especially when talking about issues that would normally be expected to engage emotions.