General to specific development of functional activation in the cerebral cortexes of 2- to 3-month-old infants

Watanabe, H.; Homae, Fumitaka; Taga, Gentaro

doi:10.1016/j.neuroimage.2010.01.068

Cited by 41 publications

(63 citation statements)

References 45 publications

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“…Thus, studying the test-retest reliability of ICA-derived RSFC is of great importance and necessity. A positive conclusion for such a study may promote the utilization of ICA in the rs-fNIRS field, such as studies of brain development Watanabe et al, 2010), brain plasticity (Miyai et al, 2003), and brain disorders (Irani et al, 2007).…”

Section: Introductionmentioning

confidence: 93%

Test–retest assessment of independent component analysis-derived resting-state functional connectivity based on functional near-infrared spectroscopy

et al. 2011

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Section: Introductionmentioning

confidence: 93%

Test–retest assessment of independent component analysis-derived resting-state functional connectivity based on functional near-infrared spectroscopy

et al. 2011

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“…Studies comparing cortical response to the same stimulation between different age groups have shown developmental changes in activation patterns over months [25,57,59,64]. This approach sometimes reveals developmental changes that are beyond expectation based on hypothesis-driven neuroimaging.…”

Section: (D) Developmental Changes In Stimulus-induced Activitymentioning

confidence: 99%

Spatiotemporal properties of cortical haemodynamic response to auditory stimuli in sleeping infants revealed by multi-channel near-infrared spectroscopy

Taga

Watanabe

Homae

2011

Phil. Trans. R. Soc. A.

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Multi-channel near-infrared spectroscopy (NIRS) has been used as a neuroimaging tool to study functional activation of the developing brain in infants. In this paper, we focus on spatiotemporal dynamics of cortical oxygenation changes during sensory processing in young infants. We use a 94-channel NIRS system to assess the activity of wide regions of the cortex in quietly sleeping three-month-old infants. Auditory stimuli composed of a random sequence of pure tones induced haemodynamic changes not only in the temporal auditory regions, but also in the occipital and frontal regions. Analyses of phase synchronization showed that mutual synchronizations of signal changes among the cortical regions were much stronger than the stimulus-induced synchronizations of signal changes. Furthermore, analyses of phase differences among cortical regions revealed phase advancement of the bilateral temporal auditory regions, and phase gradient in a posterior direction from the temporal auditory regions to the occipital regions and in an anterior direction within the frontal regions. We argue that multi-channel NIRS is capable of detecting the precise timing of cortical activation and its flow in the global network of the developing brain.

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“…1 Using fNIRS, brain functional activity can be assessed by recording the concentration of both oxygenated hemoglobin (HbO) and deoxygenated hemoglobin (HbR) with relatively high temporal resolution (e.g., 10 Hz). In recent decades, task activation studies based on fNIRS have been extensively carried out in the field of cognitive and clinical neuroscience, [2][3][4][5][6] and the results have been demonstrated to be reliable. [7][8][9] Recently, fNIRS has been adopted to investigate restingstate (i.e., task-free) brain function by White et al 10 and our group.…”

Section: Introductionmentioning

confidence: 99%

Is resting-state functional connectivity revealed by functional near-infrared spectroscopy test-retest reliable?

Zhang

Duan

et al. 2011

J. Biomed. Opt.

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Recently, resting-state functional near-infrared spectroscopy (rs-fNIRS) research has experienced tremendous progress. Resting-state functional connectivity (RSFC) has been adopted as a pivotal biomarker in rs-fNIRS studies. However, it is yet to be clear if the RSFC derived from rs-fNIRS is reliable. This concern impedes extensive utilization of rs-fNIRS. We systematically address the issue of reliability. Sixteen subjects participate in two rs-fNIRS sessions held one week apart. RSFC in sensorimotor system is calculated using the seed-correlation approach. Then, test-retest reliability is evaluated at three different scales (map-, cluster-, and channelwise) for individual- and group-level RSFC derived from different types of fNIRS signals [oxygenated (HbO), deoxygenated (HbR), and total hemoglobin (HbT)]. The results show that, for HbO signals, individual-level RSFC generally has good-to-excellent map-/clusterwise reliability, while group-level RSFC has excellent reliability. For HbT signals, the results are similar. For HbR signals, the clusterwise reliability is comparable to that for HbO while the mapwise reliability is slightly lower (fair to good). Focusing on RSFC at a single channel, we report poor channelwise reliability for all three types of signals. We hereby propose that fNIRS-derived RSFC is a reliable biomarker if interpreted in map- and clusterwise manners. However, channelwise interpretation of individual RSFC should proceed with caution.

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General to specific development of functional activation in the cerebral cortexes of 2- to 3-month-old infants

Cited by 41 publications

References 45 publications

Test–retest assessment of independent component analysis-derived resting-state functional connectivity based on functional near-infrared spectroscopy

Test–retest assessment of independent component analysis-derived resting-state functional connectivity based on functional near-infrared spectroscopy

Spatiotemporal properties of cortical haemodynamic response to auditory stimuli in sleeping infants revealed by multi-channel near-infrared spectroscopy

Is resting-state functional connectivity revealed by functional near-infrared spectroscopy test-retest reliable?

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