Blindfolded adults’ use of geometric cues in haptic-based relocation
- 10 September 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Psychonomic Bulletin & Review
- Vol. 29 (1), 88-96
- https://doi.org/10.3758/s13423-021-01994-x
Abstract
Non-visual information is important for navigation in limited visibility conditions. We designed a haptic-based relocation task to examine blindfolded adults’ use of geometric cues. Forty-eight participants learned to locate a corner in a parallelogram frame. They were then tested in different transformed frames: (a) a reverse-parallelogram, in which locations predicted by original length information and angle information conflicted, (b) a rectangle, which retained only length information, and (c) a rhombus, which retained only angle information. Results show that access to the environment’s geometry through haptic modality is sufficient for relocation. However, adults’ performances in the current task were different from that in visual tasks in previous findings. First, compared to previous findings in visual-based tasks, length information lost its priority. Approximately half of the participants relied on angle information in the conflict test and the other half relied on length. Second, though participants encoded both length and angle information in the learning phase, only one cue was relied on after the conflict test. Finally, though participants encoded the target location successfully, they failed to represent the global shape of the environment. We attribute adults' different performances in haptic-based and visual-based tasks to the high cognitive demands in encoding and using haptic spatial cues, especially length information.This publication has 31 references indexed in Scilit:
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