Alpha-Theta Effects Associated with Ageing during the Stroop Test

Cristina Nombela, Manuel Nombela, Pedro Castell, Teodoro García, Juan López-Coronado and María Trinidad Herrero

PLOS ONE, 2014, vol. 9, issue 5, 1-7

Abstract: The Stroop effect is considered as a standard attentional measure to study conflict resolution in humans. The response of the brain to conflict is supposed to change over time and it is impaired in certain pathological conditions. Neuropsychological Stroop test measures have been complemented with electroencephalography (EEG) techniques to evaluate the mechanisms in the brain that underlie conflict resolution from the age of 20 to 70. To study the changes in EEG activity during life, we recruited a large sample of healthy subjects of different ages that included 90 healthy individuals, divided by age into decade intervals, which performed the Stroop test while recording a 14 channel EEG. The results highlighted an interaction between age and stimulus that was focused on the prefrontal (Alpha and Theta band) and Occipital (Alpha band) areas. We concluded that behavioural Stroop interference is directly influenced by opposing Alpha and Theta activity and evolves across the decades of life.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0095657

DOI: 10.1371/journal.pone.0095657

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