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Data Samples

Data samples of the various modalities used to monitor patients:

EMG     SSEP     EEG     MEP     CMP     BAEP


Below is an example irritation of spontaneous EMG of the left and right recurrent laryngeal nerve being monitored during a thyroidectomy.

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Shown below is SEP data of the median nerve (MSP) observed during a carotid endarterectomy. Changes can be seen in the responses from the left median nerve at the time of clamping of the common carotid artery.

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An example of filtered EEG (left) and spectral EEG (right) during a carotid endarterectomy is pictured here.  A decrease in cortical activity in the left hemisphere occured when the left common carotid artery was clamped during the procedure.

    EEG changes from CEA

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Below is sample data of MEP collected during a craniotomy (left) and a shoulder arthroplasty (right) where the motor cortex is stimulated and potentials are recorded from muscle groups.

MEP UE/LE    MEP shoulder

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Below is a sample of CMP data from a posterior lumbar fusion.  As the pedicle screws are stimulated, evoked responses are obtained in several lower extremity muscle groups.

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This is an example of data collected from a BAEP test monitoring CN VIII, during a retromastoid craniotomy for microvascular decompression of the trigeminal nerve.


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