Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed
Transcranial direct current stimulation (tDCS) is an emerging non-invasive neuromodulation method that is convenient and popular for clinical use. However, there is a practical issue when tDCS is applied to actual subjects, in which the geometrical variation in each model influences the effect of th...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8594560/ |
| _version_ | 1818427546288521216 |
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| author | Cheolki Im Hyeon Seo Sung Chan Jun |
| author_facet | Cheolki Im Hyeon Seo Sung Chan Jun |
| author_sort | Cheolki Im |
| collection | DOAJ |
| description | Transcranial direct current stimulation (tDCS) is an emerging non-invasive neuromodulation method that is convenient and popular for clinical use. However, there is a practical issue when tDCS is applied to actual subjects, in which the geometrical variation in each model influences the effect of the predicted electric field (EF) distribution tDCS induces, and thus, may evoke unexpected EF distributions. In this paper, we investigated the effect of geometrical variations in the conventional two-pad tDCS and multi-array tDCS. For comparison, we constructed five spherical models of various thicknesses with cerebrospinal fluid and skull, as well as three anatomical head models. Thereafter, tDCS’ stimulation effects in the primary motor cortex (Brodmann area 4) were compared with respect to the EFs induced. We observed that geometrical variation’s effect is obvious for both forms of tDCS; but regardless of inter-subject variability, the multi-array tDCS montage may yield induced EFs of comparable or higher intensity and far greater focality. Thus, the multi-array tDCS is expected to have great potential to overcome inter-subject variability. |
| first_indexed | 2024-12-14T14:47:27Z |
| format | Article |
| id | doaj.art-a8c0b08fb0f5481d9a192be4051c75e8 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-14T14:47:27Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-a8c0b08fb0f5481d9a192be4051c75e82022-12-21T22:57:15ZengIEEEIEEE Access2169-35362019-01-0178557856910.1109/ACCESS.2018.28900198594560Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields ComputedCheolki Im0https://orcid.org/0000-0001-7524-3320Hyeon Seo1Sung Chan Jun2https://orcid.org/0000-0001-5357-4436School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, South KoreaSchool of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, South KoreaSchool of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, South KoreaTranscranial direct current stimulation (tDCS) is an emerging non-invasive neuromodulation method that is convenient and popular for clinical use. However, there is a practical issue when tDCS is applied to actual subjects, in which the geometrical variation in each model influences the effect of the predicted electric field (EF) distribution tDCS induces, and thus, may evoke unexpected EF distributions. In this paper, we investigated the effect of geometrical variations in the conventional two-pad tDCS and multi-array tDCS. For comparison, we constructed five spherical models of various thicknesses with cerebrospinal fluid and skull, as well as three anatomical head models. Thereafter, tDCS’ stimulation effects in the primary motor cortex (Brodmann area 4) were compared with respect to the EFs induced. We observed that geometrical variation’s effect is obvious for both forms of tDCS; but regardless of inter-subject variability, the multi-array tDCS montage may yield induced EFs of comparable or higher intensity and far greater focality. Thus, the multi-array tDCS is expected to have great potential to overcome inter-subject variability.https://ieeexplore.ieee.org/document/8594560/tDCSconventional two pad tDCSmulti-array tDCSgeometrical variationspherical head modelanatomical head model |
| spellingShingle | Cheolki Im Hyeon Seo Sung Chan Jun Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed IEEE Access tDCS conventional two pad tDCS multi-array tDCS geometrical variation spherical head model anatomical head model |
| title | Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed |
| title_full | Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed |
| title_fullStr | Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed |
| title_full_unstemmed | Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed |
| title_short | Geometrical Variation’s Influence on the Effects of Stimulation May be Important in the Conventional and Multi-Array tDCS–Comparison of Electrical Fields Computed |
| title_sort | geometrical variation x2019 s influence on the effects of stimulation may be important in the conventional and multi array tdcs x2013 comparison of electrical fields computed |
| topic | tDCS conventional two pad tDCS multi-array tDCS geometrical variation spherical head model anatomical head model |
| url | https://ieeexplore.ieee.org/document/8594560/ |
| work_keys_str_mv | AT cheolkiim geometricalvariationx2019sinfluenceontheeffectsofstimulationmaybeimportantintheconventionalandmultiarraytdcsx2013comparisonofelectricalfieldscomputed AT hyeonseo geometricalvariationx2019sinfluenceontheeffectsofstimulationmaybeimportantintheconventionalandmultiarraytdcsx2013comparisonofelectricalfieldscomputed AT sungchanjun geometricalvariationx2019sinfluenceontheeffectsofstimulationmaybeimportantintheconventionalandmultiarraytdcsx2013comparisonofelectricalfieldscomputed |