Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task
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 prefrontal cortex during a cognitive task. Twenty-t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2015-02-01
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| Series: | Frontiers in Systems Neuroscience |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnsys.2014.00252/full |
| _version_ | 1811279967430901760 |
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| author | Singh eDeepeshwar Suhas Ashok Vinchurkar Naveen Kalkuni Visweswaraiah Hongasandra RamaRao Nagendra |
| author_facet | Singh eDeepeshwar Suhas Ashok Vinchurkar Naveen Kalkuni Visweswaraiah Hongasandra RamaRao Nagendra |
| author_sort | Singh eDeepeshwar |
| collection | DOAJ |
| description | 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 prefrontal cortex 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 minutes 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 (∆HbO) and total hemoglobin (∆THC) concentration with reduced deoxy-hemoglobin (∆HbR) concentration over the right prefrontal cortex (rPFC), whereas in random thinking there was increased ∆HbR with reduced total hemoglobin concentration on the rPFC. The mean reaction time was shorter in stroop color word task with reduced ∆THC after meditation, suggestive of improved performance and efficiency in task related to attention. Our findings demonstrated that meditation increased cerebral oxygenation and enhanced performance, which was associated with prefrontal cortex activation. |
| first_indexed | 2024-04-13T01:05:18Z |
| format | Article |
| id | doaj.art-34e49ebc60b649c6bc59547573af418c |
| institution | Directory Open Access Journal |
| issn | 1662-5137 |
| language | English |
| last_indexed | 2024-04-13T01:05:18Z |
| publishDate | 2015-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Systems Neuroscience |
| spelling | doaj.art-34e49ebc60b649c6bc59547573af418c2022-12-22T03:09:22ZengFrontiers Media S.A.Frontiers in Systems Neuroscience1662-51372015-02-01810.3389/fnsys.2014.00252125182Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional TaskSingh eDeepeshwar0Suhas Ashok Vinchurkar1Naveen Kalkuni Visweswaraiah2Hongasandra RamaRao Nagendra3Swami Vivekananada Yoga Research FoundationSwami Vivekananada Yoga Research FoundationSwami Vivekananada Yoga Research FoundationSwami Vivekananada Yoga Research FoundationRecent 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 prefrontal cortex 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 minutes 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 (∆HbO) and total hemoglobin (∆THC) concentration with reduced deoxy-hemoglobin (∆HbR) concentration over the right prefrontal cortex (rPFC), whereas in random thinking there was increased ∆HbR with reduced total hemoglobin concentration on the rPFC. The mean reaction time was shorter in stroop color word task with reduced ∆THC after meditation, suggestive of improved performance and efficiency in task related to attention. Our findings demonstrated that meditation increased cerebral oxygenation and enhanced performance, which was associated with prefrontal cortex activation.http://journal.frontiersin.org/Journal/10.3389/fnsys.2014.00252/fullMeditationfNIRSStroop taskcerebral blood flow (CBF)attention task |
| spellingShingle | Singh eDeepeshwar Suhas Ashok Vinchurkar Naveen Kalkuni Visweswaraiah Hongasandra RamaRao Nagendra Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task Frontiers in Systems Neuroscience Meditation fNIRS Stroop task cerebral blood flow (CBF) attention task |
| title | Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task |
| title_full | Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task |
| title_fullStr | Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task |
| title_full_unstemmed | Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task |
| title_short | Hemodynamic Responses on Prefrontal Cortex Related to Meditation and Attentional Task |
| title_sort | hemodynamic responses on prefrontal cortex related to meditation and attentional task |
| topic | Meditation fNIRS Stroop task cerebral blood flow (CBF) attention task |
| url | http://journal.frontiersin.org/Journal/10.3389/fnsys.2014.00252/full |
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