EEG markers and subjective memory complaints in young and older people

Perez, Vanesa ; Garrido-Chaves, Ruth ; Zapater-Fajarí, Mariola ; Pulopulos, Matias M. ; Hidalgo, Vanesa (Universidad de Zaragoza) ; Salvador, Alicia

Resumen: Subjective memory complaints (SMCs) have been related to subtle cognitive deficits and neural changes. In this study, we investigated whether EEG rhythms, usually altered in mild cognitive impairment and Alzheimer's disease, are also affected in SMCs compared to people without SMCs. Seventy-one older adults (55–74 years old) and 75 young people (18–34 years old) underwent 3 min of EEG recording in a resting-state condition with their eyes open (EO) and eyes closed (EC) and a comprehensive neuropsychological evaluation. The EEG measures included were power spectral delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), beta (13–30 Hz), and EEG reactivity to EO. Compared to controls, older people with SMCs showed increased theta power and a loss of alpha reactivity to EO. Additionally, in older participants with SMCs, the theta power spectral was related to deficits in verbal memory. In contrast, we failed to find differences in the young people with SMCs, compared to the control group, in the power spectral or the EEG reactivity to EO. Our findings suggest that neurophysiological markers of brain dysfunction may identify cognitive changes even before they are observed on objective neuropsychological tests, at least in older people.

Idioma: Inglés

DOI: 10.1016/j.ijpsycho.2022.09.006

Año: 2022

Publicado en: International Journal of Psychophysiology 182 (2022), 23-31
ISSN: 0167-8760

Factor impacto JCR: 3.0 (2022)

Categ. JCR: PSYCHOLOGY rank: 32 / 81 = 0.395 (2022) - Q2 - T2
Categ. JCR: PHYSIOLOGY rank: 33 / 79 = 0.418 (2022) - Q2 - T2
Categ. JCR: PSYCHOLOGY, EXPERIMENTAL rank: 27 / 89 = 0.303 (2022) - Q2 - T1
Categ. JCR: PSYCHOLOGY, BIOLOGICAL rank: 4 / 14 = 0.286 (2022) - Q2 - T1
Categ. JCR: NEUROSCIENCES rank: 163 / 272 = 0.599 (2022) - Q3 - T2

Factor impacto CITESCORE: 4.8 - Psychology (Q1) - Neuroscience (Q2) - Medicine (Q2)

Factor impacto SCIMAGO: 0.854 - Neuropsychology and Physiological Psychology (Q2) - Physiology (medical) (Q2) - Neuroscience (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/S31-20D
Financiación: info:eu-repo/grantAgreement/ES/MCIU/FPU17-03428
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2020-119406GB-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Psicobiología (Dpto. Psicología y Sociología)