Fig 1.
Temporal vs. spatial resolutions and cost vs. ease of data acquisition among imaging methodologies.
(a) A schematic representing the relative strengths and weaknesses of temporal and spatial resolution across imaging modalities. (b) A schematic representing the relative differences in costs and ease of data acquisition presented across imaging modalities.
Table 1.
Experiments completed by each participant.
Fig 2.
The Optode template visualized on the brain.
Yellow and blue circles indicate transmitter and receiver positions, respectively.
Table 2.
Experimental and control blocks performed in each experiment.
Table 3.
Number of good quality and bad quality channels in E1.
Table 4.
Number of good quality and bad quality channels for participant P005 in E2.
Table 5.
Experimental conditions of E3.
Table 6.
Number of good quality channels across each light condition determined by SCI.
Table 7.
Number of good quality channels before and after the motion tasks.
Fig 3.
SCI analysis of E4 motion tasks vs. E3 finger-tapping tasks for P003.
(a) The walking task compared to a randomly selected task from E3 (finger-tapping). (b) The head-nod task compared to a randomly selected task from E3 (finger-tapping). (c) The head-turn task compared to a randomly selected task from E3 (finger-tapping).
Fig 4.
Demonstration of how gross motor movements affect fNIRS signal quality in P002.
(a) The transition from a non-gross movement task to a gross movement task by the collection software. (b) before and after the transition by the SCI.
Fig 5.
Gross-motor movements vs. fine-motor movements.
An independent-samples Kruskal-Wallis nonparametric test was used to evaluate whether the number of good quality channels differed between gross-motor movement tasks (i.e., head-nodding, head-turning, walking) and fine-motor movement tasks (i.e., finger-tapping). The test yielded a significant result of p < .001.
Fig 6.
HRF plot of oxygenated hemoglobin at the DLPFC of the hair cleanliness condition.
The participant performed a finger-tapping task for 10 s followed by a 10 s rest for 2 minutes every day for five days. HRF curves were then plotted based on the average oxygenated hemoglobin concentration for each block and measured in μM mm. The concentrations were then plotted against time measured in seconds.