Cortical correlates of auditory sensory gating: A simultaneous near-infrared spectroscopy event-related potential study

Ehlis, Ann‐Christine; Ringel, Thomas M.; Plichta, Michael M.; Richter, M.M.; Herrmann, Martin J.; Fallgatter, Andreas J.

doi:10.1016/j.neuroscience.2009.01.015

Cited by 58 publications

(45 citation statements)

References 53 publications

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“…Apart from the BOLD-based research techniques that were investigated here, ample studies have applied techniques with evoked brain potentials providing better temporal resolution (Arzouan et al, 2011;Faust, 2012). It would be interesting to apply alternative BOLD based research techniques, such as near infrared spectroscopy (NIRS; Dieler et al, 2011) alone and in combination with evoked potentials, thus taking advantage of both methodologies (Ehlis et al, 2009;Wallois et al, 2012).…”

Section: Implications For Further Researchmentioning

confidence: 99%

Where in the brain is nonliteral language? A coordinate-based meta-analysis of functional magnetic resonance imaging studies

2012

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Section: Implications For Further Researchmentioning

confidence: 99%

Where in the brain is nonliteral language? A coordinate-based meta-analysis of functional magnetic resonance imaging studies

2012

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“…11,12 In addition, MEG and NIRS are sensitive to local neuronal and hemodynamic responses, respectively, and the compatibility of the two modalities is thus favorable. Simultaneous measurement of neuronal activity and cortical hemodynamics using MEG and NIRS has been reported by only a few groups so far.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous measurement of neuronal activity and cortical hemodynamics by unshielded magnetoencephalography and near-infrared spectroscopy

et al. 2012

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Abstract. The correlation between neuronal activity and cortical hemodynamics, namely, neurovascular coupling (NVC), is important to shed light on the mechanism of a variety of brain functions or neuronal diseases. NVC can be studied by simultaneously measuring neuronal activity and cortical hemodynamics. Consequently, noninvasive measurements of the NVC have been widely studied using both electroencephalography (EEG) and functional magnetic resonance imaging (fMRI). However, electromagnetic interference between EEG and fMRI is still a major problem. On the other hand, near-infrared spectroscopy (NIRS) is another promising tool for detecting cortical hemodynamics because it can be combined with EEG or magnetoencephalography (MEG) without any electromagnetic interference. Accordingly, in the present study, a simultaneous measurement system-combining an unshielded MEG using a two-dimensional gradiometer based on a low-T c superconducting quantum interference device (SQUID) and an NIRS using nonmagnetic thin probes-was developed. This combined system was used to simultaneously measure both an auditory-evoked magnetic field and blood flow change in the auditory cortex. It was experimentally demonstrated that the combined unshielded MEG/NIRS system can simultaneously measure neuronal activity and cortical hemodynamics.

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“…Reports using combined fNIRS and EEG, however, have demonstrated that changes in oxyHb concentration measured by fNIRS are correlated with brain electrical activity evoked by auditory (Ehlis et al 2009), visual (Nasi et al 2010), and somatosensory (Niederhauser et al 2008;Hori et al 2010) stimuli. Therefore, the fNIRS signals measured in this study reflect changes in oxyHb coupled to enhanced cortical activity and metabolism.…”

Section: Discussionmentioning

confidence: 97%

Water Immersion to the Femur Level Affects Cerebral Cortical Activity in Humans: Functional Near-Infrared Spectroscopy Study

et al. 2011

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Water immersion is widely used in physiotherapy and may even improve the functional outcomes of hemiplegic patients after stroke. To investigate the cortical responses to water immersion, functional near-infrared spectroscopy (fNIRS) was used to measure cortical activations in the primary somatosensory area (S1), parietal association area (PAA), supplementary motor area (SMA), and primary motor area (M1). Nine healthy adult males were rested in a sitting position for 15 min with simultaneous measurements of fNIRS, blood pressure, and skin temperature. The fNIRS signal and other physiological parameters were measured under three conditions, the non-immersed condition (baseline control), as the immersion tank was filling with water (pouring water condition), and during sustained water immersion. Each condition lasted for 5 min. The water level was allowed to reach the femur, and during the experiment, room and water temperatures were maintained at 34°C. Oxygenated hemoglobin (oxyHb) concentrations in the S1, PAA, SMA, and M1 remained stable during baseline recording but gradually increased during water pouring and immersion. Significantly higher oxyHb levels were observed in S1 at 20 s after the onset of water immersion condition and in the PAA at 40 s. Subsequently, oxyHb levels in the SMA and M1 increased significantly 100 s after the onset of water immersion condition. In contrast, no significant changes in blood pressure, heart rate, or skin temperature were observed. Water immersion resulted in increased activity in both sensory and motor areas of cortex as measured by non-invasive fNIRS. Water immersion may enhance the efficacy of physical therapy by providing background activation to affected areas of the cortex, thereby enhancing signal processing and learning.

show abstract

Cortical correlates of auditory sensory gating: A simultaneous near-infrared spectroscopy event-related potential study

Cited by 58 publications

References 53 publications

Where in the brain is nonliteral language? A coordinate-based meta-analysis of functional magnetic resonance imaging studies

Where in the brain is nonliteral language? A coordinate-based meta-analysis of functional magnetic resonance imaging studies

Simultaneous measurement of neuronal activity and cortical hemodynamics by unshielded magnetoencephalography and near-infrared spectroscopy

Water Immersion to the Femur Level Affects Cerebral Cortical Activity in Humans: Functional Near-Infrared Spectroscopy Study

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