Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults
The precision of temporal multisensory integration is associated with specific aspects of physical functioning in ageing, including gait speed and incidents of falling. However, it is unknown if such an association exists between multisensory integration and grip strength, an important index of frai...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Aging Brain |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589958923000130 |
| _version_ | 1827916409067274240 |
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| author | A. O' Dowd R.J. Hirst A. Setti R.A. Kenny F.N. Newell |
| author_facet | A. O' Dowd R.J. Hirst A. Setti R.A. Kenny F.N. Newell |
| author_sort | A. O' Dowd |
| collection | DOAJ |
| description | The precision of temporal multisensory integration is associated with specific aspects of physical functioning in ageing, including gait speed and incidents of falling. However, it is unknown if such an association exists between multisensory integration and grip strength, an important index of frailty and brain health and predictor of disease and mortality in older adults. Here, we investigated whether temporal multisensory integration is associated with longitudinal (eight-year) grip strength trajectories in a large sample of 2,061 older adults (mean age = 64.42 years, SD = 7.20; 52% female) drawn from The Irish Longitudinal Study on Ageing (TILDA). Grip strength (kg) for the dominant hand was assessed with a hand-held dynamometer across four testing waves. Longitudinal k-means clustering was applied to these data separately for sex (male, female) and age group (50–64, 65–74, 75+ years). At wave 3, older adults participated in the Sound Induced Flash Illusion (SIFI), a measure of the precision of temporal audio-visual integration, which included three audio-visual stimulus onset asynchronies (SOAs): 70, 150 and 230 ms. Results showed that older adults with a relatively lower (i.e., weaker) grip strength were more susceptible to the SIFI at the longer SOAs compared to those with a relatively higher (i.e., stronger) grip strength (p <.001). These novel findings suggest that older adults with relatively weaker grip strength exhibit an expanded temporal binding window for audio-visual events, possibly reflecting a reduction in the integrity of the central nervous system. |
| first_indexed | 2024-03-13T03:14:45Z |
| format | Article |
| id | doaj.art-21dadab7cd67487aa8244e071ecb7472 |
| institution | Directory Open Access Journal |
| issn | 2589-9589 |
| language | English |
| last_indexed | 2024-03-13T03:14:45Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aging Brain |
| spelling | doaj.art-21dadab7cd67487aa8244e071ecb74722023-06-26T04:14:24ZengElsevierAging Brain2589-95892023-01-013100076Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adultsA. O' Dowd0R.J. Hirst1A. Setti2R.A. Kenny3F.N. Newell4School of Psychology and Institute of Neuroscience, Trinity College Dublin, Ireland; The Irish Longitudinal Study on Ageing, Trinity College Dublin, Ireland; Corresponding author at: School of Psychology and Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.School of Psychology and Institute of Neuroscience, Trinity College Dublin, Ireland; The Irish Longitudinal Study on Ageing, Trinity College Dublin, IrelandThe Irish Longitudinal Study on Ageing, Trinity College Dublin, Ireland; School of Applied Psychology, University College Cork, IrelandThe Irish Longitudinal Study on Ageing, Trinity College Dublin, Ireland; Mercer Institute for Successful Ageing, St James. Hospital, Dublin, IrelandSchool of Psychology and Institute of Neuroscience, Trinity College Dublin, IrelandThe precision of temporal multisensory integration is associated with specific aspects of physical functioning in ageing, including gait speed and incidents of falling. However, it is unknown if such an association exists between multisensory integration and grip strength, an important index of frailty and brain health and predictor of disease and mortality in older adults. Here, we investigated whether temporal multisensory integration is associated with longitudinal (eight-year) grip strength trajectories in a large sample of 2,061 older adults (mean age = 64.42 years, SD = 7.20; 52% female) drawn from The Irish Longitudinal Study on Ageing (TILDA). Grip strength (kg) for the dominant hand was assessed with a hand-held dynamometer across four testing waves. Longitudinal k-means clustering was applied to these data separately for sex (male, female) and age group (50–64, 65–74, 75+ years). At wave 3, older adults participated in the Sound Induced Flash Illusion (SIFI), a measure of the precision of temporal audio-visual integration, which included three audio-visual stimulus onset asynchronies (SOAs): 70, 150 and 230 ms. Results showed that older adults with a relatively lower (i.e., weaker) grip strength were more susceptible to the SIFI at the longer SOAs compared to those with a relatively higher (i.e., stronger) grip strength (p <.001). These novel findings suggest that older adults with relatively weaker grip strength exhibit an expanded temporal binding window for audio-visual events, possibly reflecting a reduction in the integrity of the central nervous system.http://www.sciencedirect.com/science/article/pii/S2589958923000130AgeingGrip strengthMultisensorySound Induced Flash Illusion |
| spellingShingle | A. O' Dowd R.J. Hirst A. Setti R.A. Kenny F.N. Newell Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults Aging Brain Ageing Grip strength Multisensory Sound Induced Flash Illusion |
| title | Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults |
| title_full | Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults |
| title_fullStr | Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults |
| title_full_unstemmed | Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults |
| title_short | Longitudinal grip strength is associated with susceptibility to the Sound Induced Flash Illusion in older adults |
| title_sort | longitudinal grip strength is associated with susceptibility to the sound induced flash illusion in older adults |
| topic | Ageing Grip strength Multisensory Sound Induced Flash Illusion |
| url | http://www.sciencedirect.com/science/article/pii/S2589958923000130 |
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