The perception of self-motion: differences in the effectiveness of optic flow in different parts of the field when standing and during active walking. Harris, L. R., Bansal, A., Guo, H., & Allison, R. S. In International Multisensory Research Forum 2025, Abstract Booklet, pages 27. 2025. ![The perception of self-motion: differences in the effectiveness of optic flow in different parts of the field when standing and during active walking. [pdf]](https://bibbase.org/img/filetypes/pdf.svg "pdf")
-1 abstract bibtex When seated, optic flow seen exclusively in the far periphery causes people to feel they have moved further than when the same motion is seen full field or in the central field only (McManus et al., J. Vis. 17(8), 2017). Is this also the case when actively walking? Here, we used a very-large-field ($±$110$\,^{∘}$) display to provide optic flow while participants were standing stationary or actively walking on a treadmill. Optic flow simulating forward self-motion was presented either full field, in just the central field ($±$20$\,^{∘}$), or in just the far periphery (beyond $±$90$\,^{∘}$). Participants indicated their simulated travel distance by stopping at the location of a previously seen target (Move-To-Target Task) or by adjusting the position of a target to indicate the distance of a previous movement (Adjust-Target Task). In the Move-To-Target task, peripheral optic flow led to higher gains (perceived travel distance / actual travel distance) compared to the central and full-field conditions during both the visual-only and visual-and-treadmill conditions. In the Adjust-Target task, however, there were no significant differences between the visual field conditions. This implies that different brain processes might be used to estimate travel distance in the Move-To-Target and Adjust-Target tasks but that optic flow in different areas of the visual field affects passive and active walking conditions equally. These findings highlight the importance of the far periphery in self-motion processing and emphasize the importance of visual cues in perceiving travel distance.
@incollection{Harris:aa,
abstract = {
When seated, optic flow seen exclusively in the far periphery causes people to feel they have moved further than when the same motion is seen full field or in the central field only (McManus et al., J. Vis. 17(8), 2017). Is this also the case when actively walking? Here, we used a very-large-field ($\pm$110$\,^{\circ}$) display to provide optic flow while participants were standing stationary or actively walking on a treadmill. Optic flow simulating forward self-motion was presented either full field, in just the central field ($\pm$20$\,^{\circ}$), or in just the far periphery (beyond $\pm$90$\,^{\circ}$). Participants indicated their simulated travel distance by stopping at the location of a previously seen target (Move-To-Target Task) or by adjusting the position of a target to indicate the distance of a previous movement (Adjust-Target Task). In the Move-To-Target task, peripheral optic flow led to higher gains (perceived travel distance / actual travel distance) compared to the central and full-field conditions during both the visual-only and visual-and-treadmill conditions. In the Adjust-Target task, however, there were no significant differences between the visual field conditions. This implies that different brain processes might be used to estimate travel distance in the Move-To-Target and Adjust-Target tasks but that optic flow in different areas of the visual field affects passive and active walking conditions equally. These findings highlight the importance of the far periphery in self-motion processing and emphasize the importance of visual cues in perceiving travel distance.},
author = {Laurence R. Harris and Ambika Bansal and Hongyi Guo and Robert S. Allison},
booktitle = {International Multisensory Research Forum 2025, Abstract Booklet},
date-added = {2025-07-26 06:39:23 -0400},
date-modified = {2025-07-26 06:39:23 -0400},
keywords = {Optic flow & Self Motion (also Locomotion & Aviation)},
pages = {27},
title = {The perception of self-motion: differences in the effectiveness of optic flow in different parts of the field when standing and during active walking.},
url-1 = {https://imrf2025.sciencesconf.org/data/AbstractBooklet_Complete_14_07_25.pdf},
year = {2025}}
Downloads: 0
{"_id":"nqw52TJsKgEQhCLhh","bibbaseid":"harris-bansal-guo-allison-theperceptionofselfmotiondifferencesintheeffectivenessofopticflowindifferentpartsofthefieldwhenstandingandduringactivewalking-2025","author_short":["Harris, L. R.","Bansal, A.","Guo, H.","Allison, R. S."],"bibdata":{"bibtype":"incollection","type":"incollection","abstract":"When seated, optic flow seen exclusively in the far periphery causes people to feel they have moved further than when the same motion is seen full field or in the central field only (McManus et al., J. Vis. 17(8), 2017). Is this also the case when actively walking? Here, we used a very-large-field ($±$110$\\,^{∘}$) display to provide optic flow while participants were standing stationary or actively walking on a treadmill. Optic flow simulating forward self-motion was presented either full field, in just the central field ($±$20$\\,^{∘}$), or in just the far periphery (beyond $±$90$\\,^{∘}$). Participants indicated their simulated travel distance by stopping at the location of a previously seen target (Move-To-Target Task) or by adjusting the position of a target to indicate the distance of a previous movement (Adjust-Target Task). In the Move-To-Target task, peripheral optic flow led to higher gains (perceived travel distance / actual travel distance) compared to the central and full-field conditions during both the visual-only and visual-and-treadmill conditions. In the Adjust-Target task, however, there were no significant differences between the visual field conditions. This implies that different brain processes might be used to estimate travel distance in the Move-To-Target and Adjust-Target tasks but that optic flow in different areas of the visual field affects passive and active walking conditions equally. These findings highlight the importance of the far periphery in self-motion processing and emphasize the importance of visual cues in perceiving travel distance.","author":[{"firstnames":["Laurence","R."],"propositions":[],"lastnames":["Harris"],"suffixes":[]},{"firstnames":["Ambika"],"propositions":[],"lastnames":["Bansal"],"suffixes":[]},{"firstnames":["Hongyi"],"propositions":[],"lastnames":["Guo"],"suffixes":[]},{"firstnames":["Robert","S."],"propositions":[],"lastnames":["Allison"],"suffixes":[]}],"booktitle":"International Multisensory Research Forum 2025, Abstract Booklet","date-added":"2025-07-26 06:39:23 -0400","date-modified":"2025-07-26 06:39:23 -0400","keywords":"Optic flow & Self Motion (also Locomotion & Aviation)","pages":"27","title":"The perception of self-motion: differences in the effectiveness of optic flow in different parts of the field when standing and during active walking.","url-1":"https://imrf2025.sciencesconf.org/data/AbstractBooklet_Complete_14_07_25.pdf","year":"2025","bibtex":"@incollection{Harris:aa,\n\tabstract = {\nWhen seated, optic flow seen exclusively in the far periphery causes people to feel they have moved further than when the same motion is seen full field or in the central field only (McManus et al., J. Vis. 17(8), 2017). Is this also the case when actively walking? Here, we used a very-large-field ($\\pm$110$\\,^{\\circ}$) display to provide optic flow while participants were standing stationary or actively walking on a treadmill. Optic flow simulating forward self-motion was presented either full field, in just the central field ($\\pm$20$\\,^{\\circ}$), or in just the far periphery (beyond $\\pm$90$\\,^{\\circ}$). Participants indicated their simulated travel distance by stopping at the location of a previously seen target (Move-To-Target Task) or by adjusting the position of a target to indicate the distance of a previous movement (Adjust-Target Task). In the Move-To-Target task, peripheral optic flow led to higher gains (perceived travel distance / actual travel distance) compared to the central and full-field conditions during both the visual-only and visual-and-treadmill conditions. In the Adjust-Target task, however, there were no significant differences between the visual field conditions. This implies that different brain processes might be used to estimate travel distance in the Move-To-Target and Adjust-Target tasks but that optic flow in different areas of the visual field affects passive and active walking conditions equally. These findings highlight the importance of the far periphery in self-motion processing and emphasize the importance of visual cues in perceiving travel distance.},\n\tauthor = {Laurence R. Harris and Ambika Bansal and Hongyi Guo and Robert S. Allison},\n\tbooktitle = {International Multisensory Research Forum 2025, Abstract Booklet},\n\tdate-added = {2025-07-26 06:39:23 -0400},\n\tdate-modified = {2025-07-26 06:39:23 -0400},\n\tkeywords = {Optic flow & Self Motion (also Locomotion & Aviation)},\n\tpages = {27},\n\ttitle = {The perception of self-motion: differences in the effectiveness of optic flow in different parts of the field when standing and during active walking.},\n\turl-1 = {https://imrf2025.sciencesconf.org/data/AbstractBooklet_Complete_14_07_25.pdf},\n\tyear = {2025}}\n\n","author_short":["Harris, L. R.","Bansal, A.","Guo, H.","Allison, R. S."],"key":"Harris:aa","id":"Harris:aa","bibbaseid":"harris-bansal-guo-allison-theperceptionofselfmotiondifferencesintheeffectivenessofopticflowindifferentpartsofthefieldwhenstandingandduringactivewalking-2025","role":"author","urls":{"-1":"https://imrf2025.sciencesconf.org/data/AbstractBooklet_Complete_14_07_25.pdf"},"keyword":["Optic flow & Self Motion (also Locomotion & Aviation)"],"metadata":{"authorlinks":{}},"html":""},"bibtype":"incollection","biburl":"www.cse.yorku.ca/percept/papers/self.bib","dataSources":["2KKYxJNEDKp35ykmq","BPKPSXjrbMGteC59J"],"keywords":["optic flow & self motion (also locomotion & aviation)"],"search_terms":["perception","self","motion","differences","effectiveness","optic","flow","different","parts","field","standing","during","active","walking","harris","bansal","guo","allison"],"title":"The perception of self-motion: differences in the effectiveness of optic flow in different parts of the field when standing and during active walking.","year":2025}