Fig. 2 (IMAGE)
Caption
Endovascular EEG and evoked responses from superficial and deep cerebral veins.
(A) A microcatheter is navigated into a small superficial cortical vein, and EEG is recorded using a wire-shaped intravascular microelectrode. (B) Resting-state EEG recorded intravascularly at the cortical surface. (C) Power spectral density of the resting-state EEG. (D) Somatosensory evoked potentials (SEPs) recorded with the intravascular electrode placed in a cortical vein. (E) SEPs to left and right median-nerve stimulation; responses are larger when stimulating the median nerve contralateral to the electrode-implanted hemisphere. (F) Electrical stimulation of the cortical surface via the intravascular electrode elicited facial electromyographic responses; stimulation of the left motor cortex evoked EMG responses in the right face. (G) Intravascular electrode positioned in a deep cerebral vein. (H) Visual evoked potentials (VEPs) recorded with the intravascular electrode placed in a deep vein.
Credit
Takamitsu Iwata et al., 2025, Microendovascular Neural Recording from Cortical and Deep Vessels with High Precision and Minimal Invasiveness, Advanced Intelligent Systems
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License
CC BY