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Why only use right-handedness for eeg in images?

Anxiety disorder

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EEG asymmetries, specifically frontal alpha EEG asymmetry, have been widely used as markers of asymmetries in relative frontal brain activity in research on emotional processing. However, recent studies have indicated that EEG asymmetries can also be observed outside the frontal lobe and in frequency bands other than alpha . In the context of handedness, it has been found that stronger right-handedness predicts greater right (relative to left) alpha power or greater left (relative to right) activity . Therefore, when using EEG as a biomarker for anxiety disorders or other processes, it is important to consider the handedness of the participants. In the case of right-handed participants, the channel ipsilateral to the dominant hand (F7 or F8) should be used for data analysis . This is because the circuitry engaged by conflict in tasks such as the Stop Signal Task may differ from that directly controlling stopping behavior, and the laterality of the biomarker may vary depending on handedness .

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Open access Handedness and the Oldowan tool industry: Is preferential right-handedness a relic from our evolutionary past? Jessica Dymon 01 Jan 2018	The provided paper does not mention the use of right-handedness for EEG in images. The paper is about the effect of handedness on Oldowan tool efficiency and effectiveness.
Journal Article•DOI EEG correlates of behavioural laterality: right-handedness. Ilona Papousek, Günter Schulter - Show less +1 more 01 Oct 1999-Perceptual and Motor Skills 21 Citations	The paper does not provide an answer to why only right-handedness was used for EEG in images. The paper focuses on examining the correlation between handedness and EEG laterality in right-handers.
Journal Article•DOI Laterality of an EEG anxiety disorder biomarker largely follows handedness. Shabah M. Shadli, Vidusha Tewari, Jack Holden, Neil McNaughton - Show less +3 more 22 Apr 2021-Cortex 5 Citations	The paper suggests that the anxiety disorder biomarker (GCSR) occurs at the right frontal site F8 in right-handed participants. Therefore, only right-handedness is used for EEG in images.
Journal Article•DOI Evidence for dissociable effects of handedness and consistency of hand preference in allocation of attention and movement planning: An EEG investigation Dimitrios Kourtis, Dimitrios Kourtis, Guy Vingerhoets - Show less +2 more 01 Dec 2016-Neuropsychologia 9 Citations	The paper does not provide an explicit answer to why only right-handedness was used for EEG in images.

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