Abstract
In order to optimally characterize full-body self-motion perception during passive translations, changes in perceived location, velocity, and acceleration must be quantified in real time and with high spatial resolution. Past methods have failed to effectively measure these critical variables. Here, we introduce continuous pointing as a novel method with several advantages over previous methods. Participants point continuously to the mentally updated location of a previously viewed target during passive, full-body movement. High-precision motion-capture data of arm angle provide a measure of a participant's perceived location and, in turn, perceived velocity at every moment during a motion trajectory. In two experiments, linear movements were presented in the absence of vision by passively translating participants with a robotic wheelchair or an anthropomorphic robotic arm (MPI Motion Simulator). The movement profiles included constant-velocity trajectories, two successive movement intervals separated by a brief pause, and reversed-motion trajectories. Results indicate a steady decay in perceived velocity during constant-velocity travel and an attenuated response to mid-trial accelerations.
| Original language | English |
|---|---|
| Pages (from-to) | 429-444 |
| Number of pages | 16 |
| Journal | Experimental Brain Research |
| Volume | 195 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2009 May 1 |
| Externally published | Yes |
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Keywords
- Continuous pointing
- Inertial cues
- Passive transport
- Self-motion perception
- Spatial updating
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Measurement of instantaneous perceived self-motion using continuous pointing. / Siegle, Joshua H.; Campos, Jennifer L.; Mohler, Betty J.; Loomis, Jack M.; Bulthoff, Heinrich.
In: Experimental Brain Research, Vol. 195, No. 3, 01.05.2009, p. 429-444.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measurement of instantaneous perceived self-motion using continuous pointing
AU - Siegle, Joshua H.
AU - Campos, Jennifer L.
AU - Mohler, Betty J.
AU - Loomis, Jack M.
AU - Bulthoff, Heinrich
PY - 2009/5/1
Y1 - 2009/5/1
N2 - In order to optimally characterize full-body self-motion perception during passive translations, changes in perceived location, velocity, and acceleration must be quantified in real time and with high spatial resolution. Past methods have failed to effectively measure these critical variables. Here, we introduce continuous pointing as a novel method with several advantages over previous methods. Participants point continuously to the mentally updated location of a previously viewed target during passive, full-body movement. High-precision motion-capture data of arm angle provide a measure of a participant's perceived location and, in turn, perceived velocity at every moment during a motion trajectory. In two experiments, linear movements were presented in the absence of vision by passively translating participants with a robotic wheelchair or an anthropomorphic robotic arm (MPI Motion Simulator). The movement profiles included constant-velocity trajectories, two successive movement intervals separated by a brief pause, and reversed-motion trajectories. Results indicate a steady decay in perceived velocity during constant-velocity travel and an attenuated response to mid-trial accelerations.
AB - In order to optimally characterize full-body self-motion perception during passive translations, changes in perceived location, velocity, and acceleration must be quantified in real time and with high spatial resolution. Past methods have failed to effectively measure these critical variables. Here, we introduce continuous pointing as a novel method with several advantages over previous methods. Participants point continuously to the mentally updated location of a previously viewed target during passive, full-body movement. High-precision motion-capture data of arm angle provide a measure of a participant's perceived location and, in turn, perceived velocity at every moment during a motion trajectory. In two experiments, linear movements were presented in the absence of vision by passively translating participants with a robotic wheelchair or an anthropomorphic robotic arm (MPI Motion Simulator). The movement profiles included constant-velocity trajectories, two successive movement intervals separated by a brief pause, and reversed-motion trajectories. Results indicate a steady decay in perceived velocity during constant-velocity travel and an attenuated response to mid-trial accelerations.
KW - Continuous pointing
KW - Inertial cues
KW - Passive transport
KW - Self-motion perception
KW - Spatial updating
UR - http://www.scopus.com/inward/record.url?scp=67349218867&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67349218867&partnerID=8YFLogxK
U2 - 10.1007/s00221-009-1805-6
DO - 10.1007/s00221-009-1805-6
M3 - Article
C2 - 19396591
AN - SCOPUS:67349218867
VL - 195
SP - 429
EP - 444
JO - Experimental Brain Research
JF - Experimental Brain Research
SN - 0014-4819
IS - 3
ER -