| Obstacle-present trials |
|
| Buffer space |
The medio-lateral distance between the obstacle marker and the shoulder marker at the point of passing the obstacle marker (determined as the point where the shoulder marker passed the marker attached to the front aspect of the obstacle). |
| Movement time |
Time to complete the movement, measured from when the obstacle marker was 1 m distant from the sternum marker in the anterior-posterior direction, until the obstacle marker was passed. |
| Velocity corrections |
Number of changes in forward velocity (changes from acceleration to deceleration or vice versa), measured from when the obstacle marker was 1 m from the sternum marker until the point of passing the obstacle marker. For additional information, see main text. |
| Obstacle detections |
Auditory guidance trials when the participant raised their hand marker to indicate obstacle perception, recorded by the experimenter. |
| Obstacle detection range |
The anterior-posterior distance between the obstacle marker and the participant’s sternum marker. This was measured at the time when the participant raised their hand marker, indicating perception of the obstacle. |
| Collisions |
Trials where a collision occurred between any part of the participant’s body or the SSD and the obstacle, recorded by the experimenter. |
| Side of obstacle avoidance |
The experimenter recorded the side of avoidance of the obstacle (passing the obstacle on the left or right). |
| False perceptions on obstacle-absent trials |
The number of obstacle-absent auditory guidance trials in which the participant raised their hand marker, incorrectly indicating perception of the obstacle. |
