Limits...
Characterization of mind wandering using fNIRS.

Durantin G, Dehais F, Delorme A - Front Syst Neurosci (2015)

Bottom Line: Functional near infrared spectroscopy is a non-invasive neuroimaging technique that has never been used so far to measure MW.We observed significant activations over the medial prefrontal cortex (mPFC) during MW, a brain region associated with the default mode network (DMN). fNIRS data were used to classify MW data above chance level.In line with previous brain-imaging studies, our results confirm the ability of fNIRS to detect Default Network activations in the context of MW.

View Article: PubMed Central - PubMed

Affiliation: Département Conception des Véhicules Aérospatiaux, Institut Supérieur de l'Aéronautique et de l'Espace Toulouse, France ; Centre de Recherche Cerveau et Cognition, Universite de Toulouse UPS, Toulouse, France ; CNRS, CerCo Toulouse, France.

ABSTRACT
Assessing whether someone is attending to a task has become important for educational and professional applications. Such attentional drifts are usually termed mind wandering (MW). The purpose of the current study is to test to what extent a recent neural imaging modality can be used to detect MW episodes. Functional near infrared spectroscopy is a non-invasive neuroimaging technique that has never been used so far to measure MW. We used the Sustained Attention to Response Task (SART) to assess when subjects attention leaves a primary task. Sixteen-channel fNIRS data were collected over frontal cortices. We observed significant activations over the medial prefrontal cortex (mPFC) during MW, a brain region associated with the default mode network (DMN). fNIRS data were used to classify MW data above chance level. In line with previous brain-imaging studies, our results confirm the ability of fNIRS to detect Default Network activations in the context of MW.

No MeSH data available.


Variation of HbO2 concentration (averaged trials across subjects) on optode 9 (in the mPFC) preceding SART Error (in blue) and SART No Error trials (in green). Shaded areas represent the standard error of the mean for each condition.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4374461&req=5

Figure 5: Variation of HbO2 concentration (averaged trials across subjects) on optode 9 (in the mPFC) preceding SART Error (in blue) and SART No Error trials (in green). Shaded areas represent the standard error of the mean for each condition.

Mentions: Figure 4 shows the topography of HbO2 concentration under both SART Error and SART No Error conditions, from 15 s until 5 s before the apparition of the stimulus. After correcting for multiple comparisons, our analysis revealed significantly higher levels of oxygenated hemoglobin for optodes 7, 9 and 11, located in the dorsomedial prefrontal cortex, preceding SART Errors (associated with MW episodes). Figure 5 indicates the temporal dynamics associated with optode 9, and shows that the greater activation observed in the medial prefrontal cortex (mPFC) before SART Errors returns to normal before the arrival of the stimulus. No significant variations relative to SART Errors were found on the deoxy-hemoglobin (HHb) signal.


Characterization of mind wandering using fNIRS.

Durantin G, Dehais F, Delorme A - Front Syst Neurosci (2015)

Variation of HbO2 concentration (averaged trials across subjects) on optode 9 (in the mPFC) preceding SART Error (in blue) and SART No Error trials (in green). Shaded areas represent the standard error of the mean for each condition.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4374461&req=5

Figure 5: Variation of HbO2 concentration (averaged trials across subjects) on optode 9 (in the mPFC) preceding SART Error (in blue) and SART No Error trials (in green). Shaded areas represent the standard error of the mean for each condition.
Mentions: Figure 4 shows the topography of HbO2 concentration under both SART Error and SART No Error conditions, from 15 s until 5 s before the apparition of the stimulus. After correcting for multiple comparisons, our analysis revealed significantly higher levels of oxygenated hemoglobin for optodes 7, 9 and 11, located in the dorsomedial prefrontal cortex, preceding SART Errors (associated with MW episodes). Figure 5 indicates the temporal dynamics associated with optode 9, and shows that the greater activation observed in the medial prefrontal cortex (mPFC) before SART Errors returns to normal before the arrival of the stimulus. No significant variations relative to SART Errors were found on the deoxy-hemoglobin (HHb) signal.

Bottom Line: Functional near infrared spectroscopy is a non-invasive neuroimaging technique that has never been used so far to measure MW.We observed significant activations over the medial prefrontal cortex (mPFC) during MW, a brain region associated with the default mode network (DMN). fNIRS data were used to classify MW data above chance level.In line with previous brain-imaging studies, our results confirm the ability of fNIRS to detect Default Network activations in the context of MW.

View Article: PubMed Central - PubMed

Affiliation: Département Conception des Véhicules Aérospatiaux, Institut Supérieur de l'Aéronautique et de l'Espace Toulouse, France ; Centre de Recherche Cerveau et Cognition, Universite de Toulouse UPS, Toulouse, France ; CNRS, CerCo Toulouse, France.

ABSTRACT
Assessing whether someone is attending to a task has become important for educational and professional applications. Such attentional drifts are usually termed mind wandering (MW). The purpose of the current study is to test to what extent a recent neural imaging modality can be used to detect MW episodes. Functional near infrared spectroscopy is a non-invasive neuroimaging technique that has never been used so far to measure MW. We used the Sustained Attention to Response Task (SART) to assess when subjects attention leaves a primary task. Sixteen-channel fNIRS data were collected over frontal cortices. We observed significant activations over the medial prefrontal cortex (mPFC) during MW, a brain region associated with the default mode network (DMN). fNIRS data were used to classify MW data above chance level. In line with previous brain-imaging studies, our results confirm the ability of fNIRS to detect Default Network activations in the context of MW.

No MeSH data available.