Abstract
This article provides data from statistical analysis of event-related brain potentials (ERPs) and spectral power from 20 participants during three attentional conditions. Specifically, P1, N1 and P300 amplitude of ERP were compared when participant׳s attention was oriented to an external task, to a visual imagery and to an inner speech. The spectral power from alpha band was also compared in these three attentional conditions. These data are related to the research article where sensory processing of external information was compared during these three conditions entitled “Orienting attention to visual or verbal/auditory imagery differentially impairs the processing of visual stimuli” (Villena-Gonzalez et al., 2016) [1].
Highlights
Data of event-related brain potentials (ERPs) and spectral alpha power when attention is engaged on visual or verbal/auditory imagery
P1, N1 and P300 amplitude of ERP were compared when participant's attention was oriented to an external task, to a visual imagery and to an inner speech
The spectral power from alpha band was compared in these three attentional conditions
Summary
Electroencephalogram (EEG) Biosemi active two 64 electrodes. Analyzed Continuous EEG data was resampled to 512 Hz, re-referenced to mastoids, filtered between 0.5 and 30 Hz, epoched and averaged to calculate Event-related potential (ERP). Data from early ERP's components during 3 conditions are shown here using 3 different ways of amplitude measurement known as peak-to-peak amplitude, local peak and mean amplitude. These data could be useful to complement the discussion about different ERP amplitude measurements, and to encourage further researchers to explain in detail the measurement used which is important for the replication of data. The data provided here may inform many researchers that are investigating attention allocation using early components of ERPs and alpha band modulations. We show a correlation between P1 local peak amplitude difference (external task – visual imagery) and alpha power difference (external task – visual imagery) at PO8 electrode (Fig. 5)
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