Rhythmic Activity Detector - Neuropace RNS 5000 User Programming Manual

Tablet Instructions

Rhythmic Activity Detector

The Rhythmic Activity detector provides highly specific and early detection of rhythmic activity within a
defined bandwidth. It acts like a frequency filter and can therefore be used to detect activity within
specific frequency bands (theta, alpha, beta, and gamma). To understand how the Rhythmic Activity
detector works refer to Figure 40.
Figure 40 Rhythmic Activity detector example
The Rhythmic Activity detector analyzes the ECoG to determine when a signal is present within a
specified bandwidth that meets specified amplitude and duration requirements. Four configurable
parameters define the Rhythmic Activity detector operation: the M
F that define the bandpass, the A
REQUENCY
signal within the bandwidth exceeds the A
increased, the detector becomes less sensitive because it will take longer for a signal at a given
frequency to be detected. As D
it will take less time for a signal at a given frequency to be detected. As A
detector becomes less sensitive because lower amplitude signals will be rejected. As A
decreased, the detector becomes more sensitive because lower amplitude signals will be accepted.
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RNS System Programming Manual
, and the D
MPLITUDE
for the minimum D
MPLITUDE
is decreased, the detector becomes more sensitive because
URATION
F and M
INIMUM REQUENCY
. Detection occurs when a
URATION
. As D
URATION URATION
is increased, the
MPLITUDE
59
AXIMUM
is
is
MPLITUDE