An intraoperative nerve evaluation device includes a flexible substrate, and a plurality of detection units disposed on the substrate and spaced apart from one another. Each of the detection units includes an electrode and a conductive wire electrically connected to the electrode. When the electrodes are attached to a nerve, a selected one of the electrodes is configured to receive an input signal via the corresponding conductive wire and to transmit the input signal to the nerve, and each of the electrodes other than the selected one is configured to receive from the nerve a response signal associated with the input signal and to transmit the response signal via the corresponding conductive wire.
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