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Developmental verbal dyspraxia can be diagnosed by a speech–language pathologist (SLP) through specific exams that measure oral mechanisms of speech. The oral mechanisms exam involves tasks such as pursing lips, blowing, licking lips, elevating the tongue, and also involves an examination of the mouth.
Elevated stress levels from neglect can lead to a release of higher levels of cortisol causing damage to the hippocampus which can affects a child’s learning and memory. [ 23 ] A study examining the motor, language, and cognitive development of neglected children showed that the scores from the Bayley Scales of Infant Development were ...
Mercury poisoning is a type of metal poisoning due to exposure to mercury. [3] Symptoms depend upon the type, dose, method, and duration of exposure. [3] [4] They may include muscle weakness, poor coordination, numbness in the hands and feet, skin rashes, anxiety, memory problems, trouble speaking, trouble hearing, or trouble seeing. [1]
Caustic ingestion occurs when someone accidentally or deliberately ingests a caustic or corrosive substance.Depending on the nature of the substance, the duration of exposure and other factors it can lead to varying degrees of damage to the oral mucosa, the esophagus, and the lining of the stomach.
The vision of infants under one month of age ranges from 6/240 to 6/60 (20/800 to 20/200). [4] By two months, visual acuity improves to 6/45 (20/150). By four months, acuity improves by a factor of 2 – calculated to be 6/18 (20/60) vision. As the infant grows, the acuity reaches the healthy adult standard of 6/6 (20/20) at six months. [5]
Vision is the primary sense for humans, [2] but speech perception is multimodal, which means that it involves information from more than one sensory modality, in particular, audition and vision. The McGurk effect arises during phonetic processing because the integration of audio and visual information happens early in speech perception. [7]
However, late exposure to language and delayed language acquisition can inhibit or significantly delay the cognitive development of deaf and hard of hearing children, and impact these skills. Late exposure to language can be defined as language deprivation (see Language deprivation in deaf and hard of hearing children). This experience is the ...
Specific language impairment (SLI) is diagnosed when a child's language does not develop normally and the difficulties cannot be accounted for by generally slow development, physical abnormality of the speech apparatus, autism spectrum disorder, apraxia, acquired brain damage or hearing loss. Twin studies have shown that it is under genetic ...