Oxyhemoglobin changes in the prefrontal cortex in response to cognitive tasks: a systematic review

The International Journal of Neuroscience
Leandro Viçosa BonettiW Darlene Reid

Abstract

the aim of this study was to synthesize PFC fNIRS outcomes on the effects of cognitive tasks compared to resting/baseline tasks in healthy adults from studies utilizing a pre/post design. original research studies were searched from seven databases (MEDLINE, EMBASE, CENTRAL, CINAHL, SCOPUS, PEDro and PubMed). Subsequently, two independent reviewers screened the titles and abstracts followed by full-text reviews to assess the studies' eligibility. eleven studies met the inclusion criteria and had data abstracted and quality assessed. Methodology varied considerably and yet cognitive tasks resulted in the ΔO2Hb increasing in 8 of the 11 and ΔHHb decreasing in 8 of 8 studies that reported this outcome. The cognitive tasks from 10 of the 11 studies were classified as "Working Memory" and "Verbal Fluency Tasks". although, the data comparison was challenging provided the heterogeneity in methodology, the results across studies were similar.

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Citations

Jun 14, 2019·Frontiers in Human Neuroscience·Kimberly MillaNancy Getchell
May 1, 2021·International Journal of Environmental Research and Public Health·Claudia Miranda-FuentesDaniel Jerez-Mayorga
Jul 7, 2021·International Journal of Occupational Safety and Ergonomics : JOSE·Qingwen ZhangPin-Chao Liao

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