the difference between recognition accuracy for words presented in the divided and focused attention conditions.

#### Virtual Morris Water Maze (vMWM)

The Morris Water Maze (MWM) is a prototypical task for assessing spatial learning and memory in rodents \[[@B37-nutrients-12-01678]\]. Successful completion of the task requires that the subject learn the location of an escape platform submerged in a pool of cloudy water. In its original form, the animal uses distal cues to navigate to the previously learnt platform location.

In this virtual analogue of the task, participants are placed in a virtual room. They are required to navigate as quickly as possible to reach a platform hidden below the surface of the water and "escape from the pool." The platform is in a fixed location, relative to environmental cues. The participantstarts each trial at one of a number of different points around the outside of the pool. Outcome measures include time and length of path taken to reach the target; the initial heading errors are recorded for each trial, as well as time in target quadrant.

Participants began with four familiarisation trials in which the platform was visible and no cues were positioned in the room, and they were told that the visible platform location was no indication of where the hidden platform would be. Sixteen learning trials were then completed in which the platform was hidden below the surface of the water at the same location (no visible indication of its location was given). Participants started each trial facing the wall in 1 of 4 starting positions, trials