Programming Instructions 57
RNS
®
System User Manual
Each ECoG stored is listed with the reason for storage (trigger) and detected events are displayed
over the captured ECoG signal. It is recommended that stored ECoGs be reviewed to assess the
electrographic response to neurostimulator-delivered therapies.
Note: A full history of stored ECoGs is available on the PDMS.
Reviewing a List of ECoGs Retrieved From the Neurostimulator for the Current Montage
1. Go to REVIEW DATA tab.
2. Select the S
TORED ECOGS tab.
Stored ECoGs may also be reviewed under the A
RCHIVED DATA tab.
Precaution: Afterdischarge Activity
If evidence of afterdischarge activity resulting from stimulation is seen either
on stored ECoGs or during test stimulation delivery, stimulation parameters
should be adjusted to prevent such occurrence.
D
ELIVERING TEST STIMULATIONS
Patient tolerability to stimulation may be verified by delivering test stimulations. The test stimulation
function allows the user to configure and deliver two separate test stimulations, each containing up to
two bursts.
Enabling and Delivering a Test Stimulation
1. Position the wand over the neurostimulator.
2. Go to T
EST STIMULATION tab.
Setting Up and Delivering Test Stimulation
1. Set the stimulation pathway by selecting at least one electrode as the anode and at least one
electrode as the cathode for the stimulation.
2. Select the amount of C
URRENT that will be delivered.
3. Select the B
URST DURATION to set the amount of time during which the burst will be delivered.
4. Select the PW
PER PHASE to set the pulse width (i.e., duration) of each phase of the biphasic
current pulse.
5. Select the F
REQUENCY to set the duration between the start of one current pulse and the start
of the subsequent current pulse. (Frequency is the inverse of duration.)
Note: The neurostimulator cannot deliver a test stimulation while an episode is being
detected or during any type of therapy delivery. Disable detection and/or therapies or
wait for a detected episode or therapy delivery to finish in order to continue with a
successful test stimulation.
Precaution: Afterdischarge Activity
If evidence of afterdischarge activity resulting from stimulation is seen either
on stored ECoGs or during test stimulation delivery, stimulation parameters
should be adjusted to prevent such occurrence.
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