Fig 1.
These steps show the overall flow of the task.
Fig 2.
Dashed lines indicate six areas. Values in parentheses show the relative coordinates of each area normalized to monitor size, 0 to 1 in both horizontal and vertical directions. Area i: a mini-map which shows a bird’s-eye view of all play Zones. When a critical event such as an attack from the enemy occurs in a certain Zone, the Zone blinks to inform the player that an event has occurred. Area ii: information about the number of destroyed enemy units, and remaining strength of the commander unit which is operated by the player. Area iii: the function(s) of a selected unit or building. Area iv: the number of resources. Area v: the play area which is a part of the selected Zone. Area vi: the total score amassed thus far by destroying enemy units. The various kinds of units, buildings, and Zones are described in the main text.
Fig 3.
Three different types of task-switching activities.
The meaning of each box is as follows. white boxes: Collecting resources and constructing buildings are done in these zones (Zone 2 and Zone 3). Blue box: The battle between the commander unit and enemy units occurs in this zone (Zone 1). Yellow box: Resources.
Table 1.
Operation method.
Table 2.
Three types of task and common game-over conditions.
Fig 4.
Examples of gaze distribution.
Each black dot indicates one sample of measured gaze location. The darker areas represent denser gaze location concentrations, meaning that gaze movement was concentrated on that area. Each red square represents an AOI (See Fig 2). Areas which are not included in an AOI have relatively low importance. Vertical axis and horizontal axis are the numerical values obtained by normalizing the monitor size.
Fig 5.
a, b: SD of gaze distribution in the horizontal direction. c, d: SD of gaze distribution in the vertical direction. Each red circle represents an individual data point. Significance level was set at *** p < .001.
Fig 6.
Ratio of gaze distribution in six areas.
Each red circle represents an individual data point. a: Significance level was set at ***p < .001, e: Significance level was set at *p < .05, j: Significance level was set at * p < .017 and ***p < .001.
Fig 7.
Classification of gaze movement.
Each data shows the percentage that each gaze movement (saccade and fixation) occupies when performing a task by applying the Eye Movement Detector in Pupil-Player. Each red circle represents an individual data point. The significance level was set at **p < .01 for saccade and *p < .05 for fixation.
Fig 8.
a, b: saccade velocity, c, d: saccade number, e, f: saccade length. Each red circle represents an individual data point. The significance level was set at *p < .05 and **p < .01.