Chapter 5 Laterality in Hemiplegic Children: Implications for the Concept of Pathological Left-Handedness

Hiscock, Merrill; Hiscock, Cheryl K.

doi:10.1016/s0166-4115(08)61246-7

Cited by 3 publications

(3 citation statements)

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“…It should be noted, however, that the present study did not employ brain lesioned subjects, thus the clinical utility has not been proven, and should therefore be read cautiously until further research has been made. A recent study by Hiscock & Hiscock (1990) on hemisphere differences in children with congenital hemiplegia suggests, however, that both techniques may have an interesting, hitherto neglected, clinical application.…”

Section: Discussionmentioning

confidence: 99%

Hemispheric asymmetry effects in children studied by dichotic listening and visual half‐field testing

Christianson

Säisä

Hugdahl

et al. 1992

Scandinavian J Psychology

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Dichotic listening (DL) and visual half-field (VHF) testing were used to study hemisphere asymmetry in a developmental perspective. Five-, 8-, and 11-year-old children were presented lists of fused words using a DL technique in Experiment 1, and 8- and 11-year-old children were presented pictures of common objects using a VHF technique in Experiment 2. In both experiments, measures of identification, free recall, and recognition of the words/pictures were employed. The results revealed effects of ear input (right-ear advantage) and half-field presentation (right visual half-field advantage) for all age groups, although the magnitude of this lateralization effect differed between the three memory measures. The results are discussed in relation to developmental aspects of language laterality, and in relation to the clinical utility of non-invasive lateralization techniques.

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Section: Discussionmentioning

confidence: 99%

Hemispheric asymmetry effects in children studied by dichotic listening and visual half‐field testing

Christianson

Säisä

Hugdahl

et al. 1992

Scandinavian J Psychology

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“…There are a few reasons for a strong "hand preference" in children with motor impairments. First, manual asymmetry may be the reflection of cerebral asymmetry formed as a result of an early brain injury [3,4,6,71]. Second, in search of the most efficient and effective ways to interact with their environment, children with motor impairments may reinforce the use of the less-affected hand for everyday activities simply because it yields better results; subsequent "disregard" of the more affected hand and continuous use of the less affected hand further reinforce the displayed manual lateralization [63,64,72].…”

Section: Development Of Hand-use Preferences In Children With Motor D...mentioning

confidence: 99%

Hand-Use Preferences for Reaching and Object Exploration in Children with Impaired Upper Extremity Functioning: The Role of Environmental Affordances

Babik,

Lobo

2023

Symmetry

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Infants and young children with weakened or impaired upper extremity functioning often develop a strong hand-use “preference” for reaching and object manipulation. While “preferring” their stronger hand, they often partially or completely ignore their “non-preferred” hand. Such manual lateralization might impede complex object exploration, which would negatively affect children’s cognitive development. The question is whether environmental affordances would significantly affect children’s manifested hand-use “preferences” by promoting the use of the “non-preferred” hand. The current sample included 17 children (5 males; 13.9 ± 8.7 months at baseline) with arthrogryposis multiplex congenita (arthrogryposis). The reaching and object exploration of the children were evaluated longitudinally across a 6-month period with and without the Playskin LiftTM exoskeletal garment (Playskin). Results showed that the use of the Playskin increased both unimanual and bimanual object contact. Also, when anti-gravity support was provided to the arms by the Playskin, children significantly increased the use of their non-preferred hand, which correlated with improved quality of object play—more bimanual object interaction and greater intensity, variability, and complexity of exploration. These findings suggest that hand-use “preference” in children with arthrogryposis is quite malleable during early development. It is likely that children with impaired upper extremity functioning do not “prefer” to use a particular hand but, rather, cannot afford using both hands due to their limited muscular or manual abilities. Importantly, environmental affordances (i.e., anti-gravity support for the arms) might significantly affect the early development of manual lateralization, with potential implications for children’s quality of object exploration and future cognitive development.

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“…Motor strength and speed for each hand is another means of assessing latcrality. In fact, neuropsychological measures such as these, which may point to weakness or reduced efficiency on one side of the body, are often seen as indicators of laterali~ed cerebral dysfunction (Hiscock & Hiscock, 1990). One of' the more accurate means of measuring hand motor strength is the use of a dynamometer that measures in kilograms thc grip strength that can be used on command.…”

Section: Mathematicsmentioning

confidence: 99%

Neuropsychological Assessment of Developmental Learning Disabilities in Adults

1996

Semin Speech Lang

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Neuropsychology has a relatively brief history in the assessment of developmental learning disabilities (DLD) in adults. For a discipline that conceptualizes clinical assessment on the basis of neurologic understanding, DLD continues to be a challenge, even today because its neurology remains relatively unknown. Nonetheless, there have been important advances in understanding the underlying brain differences in this population as well as the advancement of theory-driven models for assessment. In the context of this body of information, neuropsychological assessment provides a comprehensive means of diagnosing DLD in adults. This article describes components of a specialized neuropsychological protocol developed to diagnose DLD in adults.

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Chapter 5 Laterality in Hemiplegic Children: Implications for the Concept of Pathological Left-Handedness

Cited by 3 publications

References 41 publications

Hemispheric asymmetry effects in children studied by dichotic listening and visual half‐field testing

Hemispheric asymmetry effects in children studied by dichotic listening and visual half‐field testing

Hand-Use Preferences for Reaching and Object Exploration in Children with Impaired Upper Extremity Functioning: The Role of Environmental Affordances

Neuropsychological Assessment of Developmental Learning Disabilities in Adults

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