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Cognitive skills and reading in adults with Usher syndrome type 2.

Henricson C, Lidestam B, Lyxell B, Möller C - Front Psychol (2015)

Bottom Line: The group with USH2 displayed significantly lower performance on tests of phonological processing, and on measures requiring both fast visual judgment and phonological processing.The group with USH2 also had significantly longer reaction times, indicating that processing of visual stimuli is difficult due to the visual impairment.These findings point toward the difficulties in accessing information that persons with USH2 experience, and could be part of the explanation of why individuals with USH2 report high levels of fatigue and feelings of stress (Wahlqvist et al., 2013).

View Article: PubMed Central - PubMed

Affiliation: Swedish Institute for Disability Research (SIDR) Linköping, Sweden ; Linnaeus Centre for Research on Hearing and Deafness (HEAD) Linköping, Sweden ; Department of Behavioral Sciences and Learning, Linköping University Linköping, Sweden.

ABSTRACT

Objective: To investigate working memory (WM), phonological skills, lexical skills, and reading comprehension in adults with Usher syndrome type 2 (USH2).

Design: The participants performed tests of phonological processing, lexical access, WM, and reading comprehension. The design of the test situation and tests was specifically considered for use with persons with low vision in combination with hearing impairment. The performance of the group with USH2 on the different cognitive measures was compared to that of a matched control group with normal hearing and vision (NVH).

Study sample: Thirteen participants with USH2 aged 21-60 years and a control group of 10 individuals with NVH, matched on age and level of education.

Results: The group with USH2 displayed significantly lower performance on tests of phonological processing, and on measures requiring both fast visual judgment and phonological processing. There was a larger variation in performance among the individuals with USH2 than in the matched control group.

Conclusion: The performance of the group with USH2 indicated similar problems with phonological processing skills and phonological WM as in individuals with long-term hearing loss. The group with USH2 also had significantly longer reaction times, indicating that processing of visual stimuli is difficult due to the visual impairment. These findings point toward the difficulties in accessing information that persons with USH2 experience, and could be part of the explanation of why individuals with USH2 report high levels of fatigue and feelings of stress (Wahlqvist et al., 2013).

No MeSH data available.


Related in: MedlinePlus

Displaying reaction time (RT) in seconds and score (% correct answers) for each individual on the test Physical Matching. Individuals with USH2 are displayed as filled circles and individuals in the control group as triangles. The difference in performance among individuals with USH2 is greater than in the control group with NVH. Performance on this test was affected by degree of visual impairment.
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Figure 1: Displaying reaction time (RT) in seconds and score (% correct answers) for each individual on the test Physical Matching. Individuals with USH2 are displayed as filled circles and individuals in the control group as triangles. The difference in performance among individuals with USH2 is greater than in the control group with NVH. Performance on this test was affected by degree of visual impairment.

Mentions: The control group had significantly higher scores on this test, U= 109.00, z = 2.88, p = 0.04, r = 0.60 (USH2: M = 87.6 and SD = 12.6; NHV: M = 98.2 and SD = 4.0), and also had significantly shorter RTs, U= 18.00, z = 2.92, p = 0.04, r = 0.61 (USH2: M = 1.1 and SD = 0.4; NHV: M = 0.7 and SD = 0.1; See Table 2, and Figure 1, for details on performance in the groups). There were seven participants in the group with USH2 who performed between 94 and 100%, and six with performance below 94%, whereas in the control group only one participant performed below this score. Regarding RTs, 12 participants with USH2 had RTs longer than 0.7 s, compared to only three participants in the control group.


Cognitive skills and reading in adults with Usher syndrome type 2.

Henricson C, Lidestam B, Lyxell B, Möller C - Front Psychol (2015)

Displaying reaction time (RT) in seconds and score (% correct answers) for each individual on the test Physical Matching. Individuals with USH2 are displayed as filled circles and individuals in the control group as triangles. The difference in performance among individuals with USH2 is greater than in the control group with NVH. Performance on this test was affected by degree of visual impairment.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4373271&req=5

Figure 1: Displaying reaction time (RT) in seconds and score (% correct answers) for each individual on the test Physical Matching. Individuals with USH2 are displayed as filled circles and individuals in the control group as triangles. The difference in performance among individuals with USH2 is greater than in the control group with NVH. Performance on this test was affected by degree of visual impairment.
Mentions: The control group had significantly higher scores on this test, U= 109.00, z = 2.88, p = 0.04, r = 0.60 (USH2: M = 87.6 and SD = 12.6; NHV: M = 98.2 and SD = 4.0), and also had significantly shorter RTs, U= 18.00, z = 2.92, p = 0.04, r = 0.61 (USH2: M = 1.1 and SD = 0.4; NHV: M = 0.7 and SD = 0.1; See Table 2, and Figure 1, for details on performance in the groups). There were seven participants in the group with USH2 who performed between 94 and 100%, and six with performance below 94%, whereas in the control group only one participant performed below this score. Regarding RTs, 12 participants with USH2 had RTs longer than 0.7 s, compared to only three participants in the control group.

Bottom Line: The group with USH2 displayed significantly lower performance on tests of phonological processing, and on measures requiring both fast visual judgment and phonological processing.The group with USH2 also had significantly longer reaction times, indicating that processing of visual stimuli is difficult due to the visual impairment.These findings point toward the difficulties in accessing information that persons with USH2 experience, and could be part of the explanation of why individuals with USH2 report high levels of fatigue and feelings of stress (Wahlqvist et al., 2013).

View Article: PubMed Central - PubMed

Affiliation: Swedish Institute for Disability Research (SIDR) Linköping, Sweden ; Linnaeus Centre for Research on Hearing and Deafness (HEAD) Linköping, Sweden ; Department of Behavioral Sciences and Learning, Linköping University Linköping, Sweden.

ABSTRACT

Objective: To investigate working memory (WM), phonological skills, lexical skills, and reading comprehension in adults with Usher syndrome type 2 (USH2).

Design: The participants performed tests of phonological processing, lexical access, WM, and reading comprehension. The design of the test situation and tests was specifically considered for use with persons with low vision in combination with hearing impairment. The performance of the group with USH2 on the different cognitive measures was compared to that of a matched control group with normal hearing and vision (NVH).

Study sample: Thirteen participants with USH2 aged 21-60 years and a control group of 10 individuals with NVH, matched on age and level of education.

Results: The group with USH2 displayed significantly lower performance on tests of phonological processing, and on measures requiring both fast visual judgment and phonological processing. There was a larger variation in performance among the individuals with USH2 than in the matched control group.

Conclusion: The performance of the group with USH2 indicated similar problems with phonological processing skills and phonological WM as in individuals with long-term hearing loss. The group with USH2 also had significantly longer reaction times, indicating that processing of visual stimuli is difficult due to the visual impairment. These findings point toward the difficulties in accessing information that persons with USH2 experience, and could be part of the explanation of why individuals with USH2 report high levels of fatigue and feelings of stress (Wahlqvist et al., 2013).

No MeSH data available.


Related in: MedlinePlus