Typical oscilloscope display

A typical display from the digital oscilloscope showing simultaneous single unit recording on 8 channels (1-4 and 6-9), and EEG recording on 2 channels (5 and 10). The electrode configuration was tetrode, and channels 1-4 are the signals from tetrode 1, with channels 6-9 the signals from tetrode 2. (Click on picture to enlarge.)

The sweep rate is 10 ms/div, so that the horizontal extent of the display represents 100 ms.

The amplitude of the signals is shown on the vertical axes. The panel along the bottom shows the data collection parameters. On the left are those applying to all channels: the timebase, trigger type and the “group” (i.e., which set of electrodes is currently displayed). On the right is shown the currently selected channel (channel 1) to which the remaining displayed parameters apply: signal and reference electrodes for this channel, gain, filtering and “mode” (whether the signal is referenced, single-ended, inverted or not, etc.). All of these parameters can be changed by either mouse-click or keypress.