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Correlates of Theta and Gamma Activity during Visuospatial Incidental/Intentional Encoding and Retrieval Indicate Differences in Processing in Young and Elderly Healthy Participants.
Junco-Muñoz, Mariana Lizeth; Mejía-Rodríguez, Oliva; Cervantes-Alfaro, José Miguel; Téllez-Anguiano, Adriana Del Carmen; López-Vázquez, Miguel Ángel; Olvera-Cortés, María Esther.
Afiliação
  • Junco-Muñoz ML; Laboratorio de Neurofisiología Clínica y Experimental, Centro de Investigación Biomédica de Michoacán, Instituto Mexicano del Seguro Social, Morelia 58060, Michoacán, Mexico.
  • Mejía-Rodríguez O; Facultad de Psicología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58194, Michoacán, Mexico.
  • Cervantes-Alfaro JM; División de Investigación Clínica, Centro de Investigación Biomédica de Michoacán, Instituto Mexicano del Seguro Social, Morelia 58060, Michoacán, Mexico.
  • Téllez-Anguiano ADC; Laboratorio de Neurociencias, División de Estudios de Posgrado, Facultad de Ciencias Médicas "Dr. Ignacio Chávez", Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58194, Michoacán, Mexico.
  • López-Vázquez MÁ; Division of Graduate Studies an Research, Tecnológico Nacional de México, Morelia 58120, Michoacán, Mexico.
  • Olvera-Cortés ME; Laboratorio de Neuroplasticidad, División de Neurociencias, Centro de Investigación Biomédica de Michoacán, Instituto Mexicano del Seguro Social, Morelia 58060, Michoacán, Mexico.
Brain Sci ; 14(8)2024 Aug 02.
Article em En | MEDLINE | ID: mdl-39199479
ABSTRACT
Incidental visuospatial learning acquired under incidental conditions is more vulnerable to aging than in the intentional case. The theta and gamma correlates of the coding and retrieval of episodic memory change during aging. Based on the vulnerability of incidental coding to aging, different theta and gamma correlates could occur under the incidental versus intentional coding and retrieval of visuospatial information. Theta and gamma EEG was recorded from the frontotemporal regions, and incidental/intentional visuospatial learning was evaluated in young (25-60 years old) and elderly (60-85 years old) participants. The EEG recorded during encoding and retrieval was compared between incidental low-demand, incidental high-demand, and intentional conditions through an ANCOVA considering the patient's gender, IQ, and years of schooling as covariates. Older adults exhibited worse performances, especially in place-object associations. After the intentional study, older participants showed a further increase in false-positive errors. Higher power at the theta and gamma bands was observed for frontotemporal derivations in older participants for both encoding and retrieval. Under retrieval, only young participants had lower power in terms of errors compared with correct responses. In conclusion, the different patterns of power and coherence support incidental and intentional visuospatial encoding and retrieval in young and elderly individuals. The correlates of power with behavior are sensitive to age and performance.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article