Transcranial near-infrared photobiomodulation could modulate brain electrophysiological features and attentional performance in healthy young adults

Jahan, Ali; Nazari, Mohammad Ali; Mahmoudi, Javad; Salehpour, Farzad; Salimi, Maryam

doi:10.1007/s10103-018-02710-3

Cited by 41 publications

(51 citation statements)

References 41 publications

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“…Using an 810 nm NIR light pulse at 40 Hz, Zomorrodi et al 12 found that a single session of tPBM signi¯cantly increased the power of the subjects' alpha, beta and gamma frequencies and decreased the power of delta and theta frequencies in the resting state. Jahan et al 27 studied EEG signals recorded before and after NIR LED stimulation and found that NIR LED stimulation shortens people's the reaction time. Zomorrodi et al 28 dispensed tPBM into the default mode network (DMN) in the form of pulsed NIR light and tested its in°uence on the power spectral density.…”

Section: Discussionmentioning

confidence: 99%

“…4,[10][11][12] There is even the possibility that PBM could be used for cognitive enhancement in normal healthy people. 27,34 In this transcranial PBM (tPBM) application, near-infrared (NIR) light is often applied to the forehead because of the better penetration (no hair, longer wavelength). 10,12,27,32 During the experiment, EEG signals were collected in real-time by the NuAmps electroencephalograph.…”

Section: Subjectsmentioning

confidence: 99%

“…27,34 In this transcranial PBM (tPBM) application, near-infrared (NIR) light is often applied to the forehead because of the better penetration (no hair, longer wavelength). 10,12,27,32 During the experiment, EEG signals were collected in real-time by the NuAmps electroencephalograph. Thirty-two channels of Ag/AgCl electrodes were placed on the scalp according to the expanded international 10-20 montage system for EEG measuring and recording.…”

Section: Subjectsmentioning

confidence: 99%

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Effects of stimulating frequency of NIR LEDs light irradiation on forehead as quantified by EEG measurements

Yao

Qian

Liu

et al. 2020

J. Innov. Opt. Health Sci.

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Near-infrared (NIR) light has been shown to produce a range of physiological effects in humans, however, there is still no agreement on whether and how a single parameter, like the flicker frequency of NIR light, affects the brain. Methods: An 810[Formula: see text]nm NIR LED was used as the stimulator. Fifty subjects participated in this experiment. Forty subjects were randomly divided into four groups. Each group underwent a 30-minute NIR LED radiation with four different frequencies (i.e., 0[Formula: see text]Hz, 5[Formula: see text]Hz, 10[Formula: see text]Hz and 20[Formula: see text]Hz, respectively) on the forehead. The remaining 10 subjects formed the control group, in which they underwent a 30-minute rest period without light radiation. EEG signals of all subjects during each test were recorded. Gravity frequency (GF), relative energy change, and sample entropy were analyzed. Results: The experimental groups had larger GF values compared to the control group. Higher stimulation frequency would cause larger growth of GF ([Formula: see text], [Formula: see text]). The amplitude of alpha waves relative energy increased, while theta waves decreased remarkably in the experimental groups ([Formula: see text]), and the extent of increase/decrease was larger at higher stimulation frequency, compared to that of the control. Sample entropy of electrodes in the frontal areas were much larger than those in other brain areas in the experimental groups ([Formula: see text]). Conclusions: Larger frequency of the NIR LED light would cause more distinct brain activities in the stimulated areas. It indicates that NIR LED light may have a positive effect on modulating brain activity. These results may help improve the design of photobiomodulation treatments in the future.

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Section: Discussionmentioning

confidence: 99%

Section: Subjectsmentioning

confidence: 99%

Section: Subjectsmentioning

confidence: 99%

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Effects of stimulating frequency of NIR LEDs light irradiation on forehead as quantified by EEG measurements

Yao

Qian

Liu

et al. 2020

J. Innov. Opt. Health Sci.

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“…The number of FFT point was 250, and the overlapping ratio was 0.5. 32 Regions of interest for EEG recording were frontal (FP1, FP2, Fz, F3, F4, F7, F8), parietal (Cz, C3, C4, Pz, P3, P4), and temporal (T3, T4, T5, T6).…”

Section: Eeg Recordingmentioning

confidence: 99%

Electroencephalographic characteristics of word finding during phonological and semantic verbal fluency tasks

Mousavi

Nazari

Babapour

et al. 2020

Neuropsychopharm Rep

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Aims Verbal Fluency is sensitive to brain damage and is employed to assess language abilities like the size of vocabulary and the semantic‐lexical networks’ integrity and executive functioning abilities particularly inhibition, working memory, and self‐monitoring. Various studies revealed oscillatory changes related to word retrieval during different tasks. However, there are not enough studies on electroencephalographic characteristics of word retrieval routes (phonological or semantic pathway) during free recall. The purpose of our study was to investigate electroencephalography power relationship with semantic and phonological word finding routes during verbal fluency. Methods In this within‐subject study, the electroencephalography of 20 healthy participants was recorded during written category and letter fluency tasks and compared with the rest state. Absolute power of the signals in delta (1‐3.5 Hz), theta (4‐7.5 Hz), alpha (8‐12 Hz), and beta (12.5‐30 Hz) was calculated in three lobes (frontal, parietal, and temporal). Results A repeated measures ANOVA showed significant interaction of condition × lobe × frequency × side (P < .001). Post hoc test for each lobe showed significant changes in the absolute power of delta, theta and beta for frontal, delta and theta for parietal, and theta and beta for temporal lobes (P‐values < .05). Conclusion Searching the words by phonological entries is associated with decreased beta and increased theta in left frontal lobe. These changes are not necessary for semantic word retrieval strategy.

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“…3,[19][20][21][22][23][24] The promotion of cognitive performance such as the reaction time has been observed in some cognitive studies assessed by the attentional tests or the psychomotor vigilance task (PVT). 20,25,26 Moreover, some improvements in motor function, balance, coordination and muscle power in traumatic brain injury, stroke, and Parkinson diseases were reported as the accessory findings of the PBM studies on animal models after modulating the frontal or pre-frontal regions. [27][28][29][30][31][32] However, to our knowledge, none of these available studies targeted motor performance as the main purpose of the transcranial NIR-PBM.…”

Section: Introductionmentioning

confidence: 99%

Short-term Effects of Transcranial Near-Infrared Photobiomodulation on Motor Performance in Healthy Human Subjects: An Experimental SingleBlind Randomized Clinical Trial

et al. 2019

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Introduction: Transcranial near-infrared photobiomodulation (NIR-PBM) is a new noninvasive procedure which transcranially applies a near-infrared wavelength to the scalp with a laser or a light-emitting diode (LED) source. Improvement in the neurological or psychological symptoms has been reported following light irradiation. However, to our knowledge, there is no study to investigate the effects of transcranial NIR-PBM on motor performance directly. Therefore, the objective of this study was to investigate the short-term effects of transcranial NIR-PBM on motor performance in healthy human subjects. Methods: In this experimental single-blind randomized clinical trial study, 56 right-handed healthy participants, whose ages ranged from 18 to 30, were randomly assigned to (1) Real transcranial NIR-PBMC3 group (n=14), (2) Sham transcranial NIR-PBMC3 group (n=14), (3) Real transcranial NIR-PBMC4 group (n=14), and (4) Sham transcranial NIR-PBMC4 group (n=14). We applied the 808 nm laser with irradiation energy density of 60 J/cm2 and power density of 200 mw/cm2 to the C3 or C4 points of the scalp. The number of finger taps as an indicator of motor performance was assessed by the finger-tapping test (FTT) before and after irradiation of transcranial NIR-PBM on the corresponding points of the scalp for 5 minutes. Results: The results showed that the number of finger taps in both right and left hands following the use of transcranial NIR-PBM in the real transcranial NIR-PBMC3 group significantly increased (P<0.05). Conclusion: We concluded that using transcranial NIR-PBM with a laser source on C3 point of the motor cortex in right-handed healthy people can increase the number of finger taps in both hands as an indicator of motor performance improvement.

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Transcranial near-infrared photobiomodulation could modulate brain electrophysiological features and attentional performance in healthy young adults

Cited by 41 publications

References 41 publications

Effects of stimulating frequency of NIR LEDs light irradiation on forehead as quantified by EEG measurements

Effects of stimulating frequency of NIR LEDs light irradiation on forehead as quantified by EEG measurements

Electroencephalographic characteristics of word finding during phonological and semantic verbal fluency tasks

Short-term Effects of Transcranial Near-Infrared Photobiomodulation on Motor Performance in Healthy Human Subjects: An Experimental SingleBlind Randomized Clinical Trial

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