This study aims to investigate what information your brain uses to plan and execute reaching movements under uncertainty.

Every time you type on a keyboard without looking, or return a tennis serve, or even walk across an uneven surface, your brain needs to evaluate the best possible course of action and then implement it. These are all examples of how our brain is constantly solving these problems for us and we don’t even notice most of the time, and it remains unclear how it does it!

In this experiment we take those ideas and simplify them to a simple game-like task. A target is hidden on the screen somewhere, and all you are given to help find it is some small visual cues. You need to make a quick reach toward where you think the target is hiding, and then it will reveal itself. We will use motion-capture technology to track the location of your hand in space and later analyse your movement patterns.

This project is being run with additional safety measures to help minimise the risk presented by COVID-19. You (and the experimenter) will be required to wear a mask throughout the session (one will be provided), and clean your hands before and after the session. You are welcome to wear your own mask if you would prefer.

Participant benefits:

Participants will be reimbursed $20 for their time. Participation will take 1 hour.


Participants must be 18-40 years old, and have normal or corrected-to-normal hearing and vision.

Participants must also be free from any condition that would limit their ability to perform repetitive reaching movements with their right arm.

Additionally, participants must not be at an elevated risk from COVID-19, must not have recently visited any COVID-19 hotspots, and must not be experiencing any symptoms of COVID-19, no matter how mild.

Register your interest:

Please contact Brendan Keane:

This study has been approved by The University of Queensland Human Research Ethics Committee [Approval No. 2019000292]