Reliability analysis of individual visual P1 and N1 maps indicates the heterogeneous topographies involved in early visual processing among human subjects

Manuel Vázquez-Marrufo; Alberto Del Barco-Gavala; Alejandro Galvao-Carmona; Rubén Martín-Clemente

doi:10.1016/j.bbr.2020.112930

Reliability analysis of individual visual P1 and N1 maps indicates the heterogeneous topographies involved in early visual processing among human subjects

Behav Brain Res. 2021 Jan 15:397:112930. doi: 10.1016/j.bbr.2020.112930. Epub 2020 Sep 25.

Authors

Manuel Vázquez-Marrufo¹, Alberto Del Barco-Gavala², Alejandro Galvao-Carmona³, Rubén Martín-Clemente⁴

Affiliations

¹ Experimental Psychology Department, Faculty of Psychology, University of Seville, Calle Camilo José Cela s/n, Seville, Spain. Electronic address: marrufo@us.es.
² Experimental Psychology Department, Faculty of Psychology, University of Seville, Calle Camilo José Cela s/n, Seville, Spain.
³ Department of Psychology, Universidad Loyola Andalucía, Av. de las Universidades, 41704, Dos Hermanas, Seville, Spain.
⁴ Signal Processing and Communications Department, Higher Technical School of Engineering, University of Seville, Camino de los Descubrimientos, s/n, 41092, Seville, Spain.

PMID: 32987058
DOI: 10.1016/j.bbr.2020.112930

Abstract

There is a lack of studies regarding the reliability of the event-related components (ERPs) of an electroencephalogram (EEG) used to assess cognitive processing in human subjects. To explore the reliability scores for the P1 and N1 components in two sessions (separated by an average of 116 days), twenty subjects performed a visual lateralized detection paradigm and EEG recording (58 channels) were employed. The session factor did not modulate the P1/N1 latencies. The visual field factor (left (LVF) or right (RVF)) was a determinant for the P1 and N1 topographical distributions as shown in previous studies. Moreover, topographical maps of the grand average showed a very strong correlation level between sessions (>0.9). Finally, individual maps demonstrated that the classic contralateral pattern for the P1 and N1 components was not always present in all subjects. In particular, compared to the N1 component, the P1 component exhibited a more complex set of individual topographical distributions, revealing that some steps are more heterogeneous among human subjects in early visual processing.

Keywords: ERPs; Latency; N1; P1; Reliability; Topography.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Brain Mapping*
Cerebral Cortex / physiology*
Electroencephalography
Electrooculography
Evoked Potentials, Visual / physiology*
Female
Functional Laterality / physiology*
Humans
Male
Middle Aged
Reproducibility of Results
Visual Fields / physiology
Visual Perception / physiology*
Young Adult