Setting the dwell memory time on eye control selection

Using dwell memory time, you can set the delay after which dwell time is saved in memory. This option can be set for users struggling to remain on a cell with their eyes for the entire dwell time.

For example, the dwell time needed to continue with selection is set to 2 seconds and the dwell time memory is set to 1 second. The user looks at cell A for 1.5 seconds. This time (1.5 seconds) is greater than the set dwell memory time (1 second), so the amount of time (1.5 seconds) is stored in memory. Then the user looks at cell B for 0.5 seconds. This time (0.5 seconds) is less than the dwell memory time (1 second) and is therefore not stored in memory. Then, the user looks at cell A for more than 0.5 seconds. Cell A is selected. So, the user has looked at cell A for more than 2 seconds in total, of which 1.5 seconds was stored in memory in the first action.

  1. Choose Tools > Eye tracking > Selection.
  2. From the Timing options group, click Dwell memory time.
  3. Do one of the following:
    • Click on to decrease the dwell memory time, click on to increase the dwell memory time.
    • Drag the slider to the left to decrease the dwell memory time, drag it to the right to increase the dwell memory time.
  4. Click OK.