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Markers of cognitive function in individuals with metabolic disease: Morquio syndrome and tyrosinemia type III

Blundell, J; Frisson, S; Chakrapani, A; Kearney, S; Vijay, S; MacDonald, A; Gissen, P; ... Olson, A; + view all (2018) Markers of cognitive function in individuals with metabolic disease: Morquio syndrome and tyrosinemia type III. Cognitive Neuropsychology , 35 (3-4) pp. 120-147. 10.1080/02643294.2018.1443913. Green open access

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Abstract

We characterized cognitive function in two metabolic diseases. MPS–IVa (mucopolysaccharidosis IVa, Morquio) and tyrosinemia type III individuals were assessed using tasks of attention, language and oculomotor function. MPS–IVa individuals were slower in visual search, but the display size effects were normal, and slowing was not due to long reaction times (ruling out slow item processing or distraction). Maintaining gaze in an oculomotor task was difficult. Results implicated sustained attention and task initiation or response processing. Shifting attention, accumulating evidence and selecting targets were unaffected. Visual search was also slowed in tyrosinemia type III, and patterns in visual search and fixation tasks pointed to sustained attention impairments, although there were differences from MPS–IVa. Language was impaired in tyrosinemia type III but not MPS–IVa. Metabolic diseases produced selective cognitive effects. Our results, incorporating new methods for developmental data and model selection, illustrate how cognitive data can contribute to understanding function in biochemical brain systems.

Type: Article
Title: Markers of cognitive function in individuals with metabolic disease: Morquio syndrome and tyrosinemia type III
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/02643294.2018.1443913
Publisher version: https://doi.org/10.1080/02643294.2018.1443913
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Social Sciences, Psychology, Psychology, Experimental, Attention, developmental disorder, language, morquio, tyrosinemia, VISUAL-SEARCH, DIFFUSION-MODEL, WORKING-MEMORY, READING ALOUD, EYE-MOVEMENT, DISORDERS, ATTENTION, DYSLEXIA, BEHAVIOR, TASKS
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health > Genetics and Genomic Medicine Dept
URI: https://discovery.ucl.ac.uk/id/eprint/10055405
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