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1.
Psychiatry Res ; 333: 115760, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38301285

RESUMEN

The nature of the relationship between sleep problems and dementia remains unclear. This study investigated the relationship between sleep measures and dementia in older adults (≥ 65) using data from the English Longitudinal Study of Ageing (ELSA) and further investigated the causal association in Mendelian randomization (MR) analysis. In total of 7,223 individuals, 5.7 % developed dementia (1.7 % Alzheimer's disease (AD)) within an average of 8 (± 2.9) years. Cox regression models and MR were employed. Long sleep duration (>8 h) was associated with 64 % increased risk of incident dementia and 2-fold high risk of AD compared to ideal sleep duration (7-8 h). This association was particularly evident in older-older adults (≥70 years) and those who consumed alcohol. Short sleep duration (<7 h) was associated with lower risk of incident dementia among older-older but higher risk among younger-older adults. Sleep disturbances and perceived sleep quality were not associated with dementia or AD. The MR study did not reveal causal associations between sleep duration and dementia. These findings suggest that self-reported short sleep in younger-older and long sleep in older-older adults and those with frequent alcohol consumption are associated with dementia. Early detection of these sleep patterns may help identify individuals at higher dementia risk.


Asunto(s)
Enfermedad de Alzheimer , Trastornos del Sueño-Vigilia , Humanos , Anciano , Enfermedad de Alzheimer/epidemiología , Enfermedad de Alzheimer/complicaciones , Estudios de Seguimiento , Estudios Longitudinales , Duración del Sueño , Incidencia , Sueño , Trastornos del Sueño-Vigilia/complicaciones
2.
Sci Rep ; 9(1): 10317, 2019 07 16.
Artículo en Inglés | MEDLINE | ID: mdl-31311967

RESUMEN

It is generally well-known, and scientifically well established, that music affects emotions and moods. However, only little is known about the influence of music on thoughts. This scarcity is particularly surprising given the importance of the valence of thoughts for psychological health and well-being. We presented excerpts of heroic- and sad-sounding music to n = 62 individuals, and collected thought probes after each excerpt, assessing the valence and the nature of thoughts stimulated by the music. Our results show that mind-wandering emerged during listening to either type of music (heroic, sad), and that the type of music strongly influenced the thought contents during mind-wandering. Heroic-sounding music evoked more positive, exciting, constructive, and motivating thoughts, while sad-sounding music evoked more calm or demotivating thoughts. The results thus indicate that music has a strong effect on the valence of thought contents during mind-wandering, with heroic music evoking more empowering and motivating thoughts, and sad music more relaxing or depressive thoughts. These findings have important implications for the use of music in everyday life to promote health and well-being in both clinical populations and healthy individuals.


Asunto(s)
Percepción Auditiva/fisiología , Música/psicología , Conducta Errante/psicología , Adulto , Femenino , Humanos , Masculino , Poder Psicológico , Pensamiento , Adulto Joven
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