The HED Task Catalog is under development. IDs are not stable until formal release. Comments are welcome at github.com/hed-standard/hed-task/issues.

Virtual Morris Water Maze Task

HED task ID: hedtsk_virtual_morris_water_maze

Family: Spatial cognition and navigation tasks

Also known as: vMWM, Morris Water Maze, Virtual Water Maze

Navigate a virtual circular arena to find a hidden platform using distal spatial cues; latency and search patterns index allocentric spatial learning and navigation ability.

Description

In the Virtual Morris Water Maze, participants navigate a virtual environment to find a hidden goal location using environmental landmarks. During acquisition, participants start from different positions and learn the goal location across trials; performance is indexed by path length, latency, and heading error. Probe trials (goal removed) assess retention by measuring search distribution. The task engages hippocampal spatial mapping and is highly sensitive to hippocampal dysfunction. It dissociates place-based (allocentric) from response-based (egocentric) navigation strategies.

Inclusion test

An experiment is an instance of this task when its procedure matches, it manipulates at least one of the listed variables, and it records at least one of the listed measures.

Procedure

Participants navigate a virtual circular arena to find a hidden platform using distal visual cues. Across trials, they learn the platform’s fixed spatial location.

Manipulation

Cue availability and configuration; platform position; probe trials (platform removed to assess spatial knowledge); visible vs. hidden platform.

Measurement

Path length and latency to find platform across trials (learning curve); probe trial: time in target quadrant, proximity to platform location; search strategy classification.

Variations

Named versions that change what the participant experiences or does. The identifier of a variation is hedvar_<task>__<variation>.

Variation

Description

Justification

Hidden Platform (Allocentric)

hedvar_virtual_morris_water_maze__hidden_platform_allocentric

Navigate to invisible goal using distal landmarks; hippocampal-dependent.

Canonical allocentric navigation to hidden platform using distal cues

Visible Platform (Cue-Based)

hedvar_virtual_morris_water_maze__visible_platform_cue_based

Navigate to visible cue; striatal/response learning.

Platform marked visibly; cue-based navigation without spatial learning

Probe Trials

hedvar_virtual_morris_water_maze__probe_trials

Platform removed; time in target quadrant measures spatial memory.

Platform removed; tests memory for trained location

Reversal

hedvar_virtual_morris_water_maze__reversal

Platform relocated; tests behavioral flexibility.

Platform moved to opposite quadrant; tests behavioral flexibility

Dual-Solution Design

hedvar_virtual_morris_water_maze__dual_solution_design

Task solvable by allocentric or egocentric strategy; probe trials disambiguate.

Landmark and allocentric routes both available; tests strategy preference

Virtual Star Maze

hedvar_virtual_morris_water_maze__virtual_star_maze

Y-maze or T-maze alternatives for simpler allocentric/egocentric dissociation.

Star-shaped corridors in VR; different maze geometry

Path Integration Tasks

hedvar_virtual_morris_water_maze__path_integration_tasks

Navigate to remembered location in darkness; tests dead reckoning.

Navigation without visual landmarks; dead reckoning demand

Large-Scale Virtual Cities

hedvar_virtual_morris_water_maze__large_scale_virtual_cities

Naturalistic navigation in complex environments (e.g., Tube map task, Sea Hero Quest).

City-scale environment; different scale and complexity

Boundary-Based vs. Landmark-Based Navigation

hedvar_virtual_morris_water_maze__boundary_based_vs_landmark_based_navigation

Distinguishing geometric/boundary cues from feature/landmark cues.

Systematically varies cue type; tests geometric vs. landmark navigation

Cognitive processes

This task is designed to engage the following processes:

Key references

  • Morris, R. G. M. (1984). Developments of a water-maze procedure for studying spatial learning in the rat. Journal of Neuroscience Methods, 11(1), 47-60. (DOI, PubMed)

  • Maguire, E. A., Burgess, N., Donnett, J. G., Frackowiak, R. S. J., Frith, C. D., & O’Keefe, J. (1998). Knowing where and getting there: A human navigation network. Science, 280(5365), 921-924. (DOI, PubMed)

  • Hartley, T., Maguire, E. A., Spiers, H. J., & Burgess, N. (2003). The well-worn route and the path less traveled: Distinct neural bases of route following and wayfinding in humans. Neuron, 37(5), 877-888. (DOI, PubMed)

Further references

  • Epstein, R. A., Patai, E. Z., Julian, J. B., & Spiers, H. J. (2017). The cognitive map in humans: Spatial navigation and beyond. Nature Neuroscience, 20(11), 1504–1513. (DOI, PubMed)

  • Ekstrom, A. D., & Isham, E. A. (2017). Human spatial navigation: Representations across dimensions and scales. Current Opinion in Behavioral Sciences, 17, 84–89. (DOI, PubMed)

  • Coughlan, G., Laczó, J., Hort, J., Minihane, A. M., & Hornberger, M. (2018). Spatial navigation deficits—overlooked cognitive marker for preclinical Alzheimer disease? Nature Reviews Neurology, 14(8), 496–506. (DOI, PubMed)

  • Spiers, H. J., & Barry, C. (2015). Neural systems supporting navigation. Current Opinion in Behavioral Sciences, 1, 47–55. (DOI)