Investigation of the Influence of ECoG Grid Spatial Density on Decoding Hand Flexion and Extension

Jiang, Tianxiao; Jiang, Tao; Wang, Taylor; Mei, Shanshan; Liu, Qingzhu; Li, Yunlin; Wang, Xiaofei; Prabhu, Sujit S.; Sha, Zhiyi; Ince, Nuri F.

doi:10.1109/embc.2018.8513008

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Several human and NHP epidural studies with clinical and high-density grids have accomplished levels of decoding of upper limb movements (Baker et al, 2009;Larzabal et al, 2021;Spüler, Walter, Murguialday, et al, 2014;Thomas et al, 2019) that are comparable with those for subdural electrodes (Gruenwald et al, 2019;Jiang et al, 2017Jiang et al, , 2018Kub anek et al, 2009;Shiraishi et al, 2020;Yao & Shoaran, 2019). Of note, one study…”

Section: Offline Classification Studiesmentioning

confidence: 99%

“…Several human and NHP epidural studies with clinical and high‐density grids have accomplished levels of decoding of upper limb movements (Baker et al, 2009; Choi, Kim, et al, 2018; Choi, Lee, Park, Lee, et al, 2018; Larzabal et al, 2021; Spüler, Walter, Murguialday, et al, 2014; Thomas et al, 2019) that are comparable with those for subdural electrodes (Gruenwald et al, 2019; Jiang et al, 2017, 2018; Kubánek et al, 2009; Shiraishi et al, 2020; Yao & Shoaran, 2019). Of note, one study described both epidural and subdural classifications of finger, wrist and elbow flexion and extension in abled‐bodied participants using clinical and high‐density grids (Thomas et al, 2019).…”

Section: Signal Decodability For Epidural Recordingsmentioning

confidence: 99%

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Nine decades of electrocorticography: A comparison between epidural and subdural recordings

Branco

Geukes

Aarnoutse

et al. 2023

Eur J of Neuroscience

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In recent years, electrocorticography (ECoG) has arisen as a neural signal recording tool in the development of clinically viable neural interfaces. ECoG electrodes are generally placed below the dura mater (subdural) but can also be placed on top of the dura (epidural). In deciding which of these modalities best suits long‐term implants, complications and signal quality are important considerations. Conceptually, epidural placement may present a lower risk of complications as the dura is left intact but also a lower signal quality due to the dura acting as a signal attenuator. The extent to which complications and signal quality are affected by the dura, however, has been a matter of debate. To improve our understanding of the effects of the dura on complications and signal quality, we conducted a literature review. We inventorized the effect of the dura on signal quality, decodability and longevity of acute and chronic ECoG recordings in humans and non‐human primates. Also, we compared the incidence and nature of serious complications in studies that employed epidural and subdural ECoG. Overall, we found that, even though epidural recordings exhibit attenuated signal amplitude over subdural recordings, particularly for high‐density grids, the decodability of epidural recorded signals does not seem to be markedly affected. Additionally, we found that the nature of serious complications was comparable between epidural and subdural recordings. These results indicate that both epidural and subdural ECoG may be suited for long‐term neural signal recordings, at least for current generations of clinical and high‐density ECoG grids.

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