Hemodynamic responses on prefrontal cortex related to meditation and attentional task

Frontiers in Systems Neuroscience
Singh DeepeshwarHongasandra RamaRao Nagendra

Abstract

Recent neuroimaging studies state that meditation increases regional cerebral blood flow (rCBF) in the prefrontal cortex (PFC). The present study employed functional near infrared spectroscopy (fNIRS) to evaluate the relative hemodynamic changes in PFC during a cognitive task. Twenty-two healthy male volunteers with ages between 18 and 30 years (group mean age ± SD; 22.9 ± 4.6 years) performed a color-word stroop task before and after 20 min of meditation and random thinking. Repeated measures ANOVA was performed followed by a post hoc analysis with Bonferroni adjustment for multiple comparisons between the mean values of "During" and "Post" with "Pre" state. During meditation there was an increased in oxy-hemoglobin (ΔHbO) and total hemoglobin (ΔTHC) concentration with reduced deoxy-hemoglobin (ΔHbR) concentration over the right prefrontal cortex (rPFC), whereas in random thinking there was increased ΔHbR with reduced total hemoglobin concentration on the rPFC. The mean reaction time (RT) was shorter during stroop color word task with concomitant reduction in ΔTHC after meditation, suggestive of improved performance and efficiency in task related to attention. Our findings demonstrated that meditation increased cerebral oxygen...Continue Reading

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Citations

Aug 2, 2016·Journal of Psychosocial Nursing and Mental Health Services·Lois M PlattRonald L Koch
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Mar 9, 2021·Evidence-based Complementary and Alternative Medicine : ECAM·Tianyu LiuFang Zeng
Aug 25, 2021·Case Reports in Psychiatry·Sulochana JoshiPawan Sharma

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Methods Mentioned

BETA
infrared spectroscopy

Software Mentioned

COBI
Prime
SPSS

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