Apple Motion 1.0.1 Manual do Utilizador descarregar pdf (Página 9)

C. MonitoringDecisionStatisticsforSelectedChannel(DecisionHistory

Tab)

The MouseRec program extracts signal features and computes the decision statistic every 2

seconds so sleep and wake behavior can be observed in real time. The Decision History tab

shown in Fig. 7 plots the decision statistics corresponding to the channel selected in the Raw

Data panel. This panel also shows the current sleep-wake state via the green LED, which

indicates detected sleep when lit. Detection is based on comparing the decision statistics to a

sleep threshold, which by default is 0, but can be changed under the Settings/Information tab.

Larger positive decision statistics indicate a greater likelihood of sleep, while negative decision

statistics indicate a greater likelihood of wake. These decision statistics are stored in a file with

the Feat extension. An analysis program uses histograms such as these to set adaptive thresholds

for each channel to compensate for minor variations in sleep and wake behaviors between mice.

The active channel number is shown in this panel, but it cannot be changed here. It must be

changed in the Raw Data panel. This panel always shows results for the channel selected in the

Raw Data channel tab.

Figure 7. Decision History panel for Channel 2. Each dot represents the decision statistic

computed over a 2 second interval. Positive values indicate sleep more likely, while negative

values indicate wake more likely. Decision threshold set to 0 by default.

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Apple Motion 1.0.1 Manual do Utilizador Página 9