Bilateral Transfer of a Visuomotor Task in Different Workspace Configurations
This study assessed whether bilateral transfer of a visuomotor adaptation task changes with workspace configuration manipulation. Ninety-six right-handed young adults were assigned to one of three workspace locations, i.e., ipsilateral, contralateral, and central. Within each workspace were two retention groups (RRR/LLL) and two bilateral transfer groups (RLR/LRL). Performance before and after training was collected to determine direct and after-effects. We observed an asymmetric transfer of pathlength (left to right) but no ensuing after-effect. However, the transfer of movement time and normalized jerk was symmetric in t...
Source: Journal of Motor Behavior - December 18, 2023 Category: Neurology Authors: Reuben N Addison Arend W A Van Gemmert Source Type: research

Postural Stability When Grasping an Object While Standing: Younger and Older Adults (Fallers and Non-Fallers)
J Mot Behav. 2023 Dec 18:1-7. doi: 10.1080/00222895.2023.2293007. Online ahead of print.ABSTRACTWe investigated postural stability through the margin of stability (MoS) while reaching and grasping an object with increasing difficulty levels in younger, fallers and non-fallers. Forty-five individuals distributed into three groups participated in this study: younger adults (YA), non-fallers (OA), and fallers (FOA). They stood upright and reached and grasped a dowel. Six conditions combining the stability of the dowel's base and obstacles close to the dowel were manipulated to characterize different difficulty levels. We comp...
Source: Journal of Motor Behavior - December 18, 2023 Category: Neurology Authors: Natalia Madalena Rinaldi Renato Moraes Source Type: research

Bilateral Transfer of a Visuomotor Task in Different Workspace Configurations
This study assessed whether bilateral transfer of a visuomotor adaptation task changes with workspace configuration manipulation. Ninety-six right-handed young adults were assigned to one of three workspace locations, i.e., ipsilateral, contralateral, and central. Within each workspace were two retention groups (RRR/LLL) and two bilateral transfer groups (RLR/LRL). Performance before and after training was collected to determine direct and after-effects. We observed an asymmetric transfer of pathlength (left to right) but no ensuing after-effect. However, the transfer of movement time and normalized jerk was symmetric in t...
Source: Journal of Motor Behavior - December 18, 2023 Category: Neurology Authors: Reuben N Addison Arend W A Van Gemmert Source Type: research

Postural Stability When Grasping an Object While Standing: Younger and Older Adults (Fallers and Non-Fallers)
J Mot Behav. 2023 Dec 18:1-7. doi: 10.1080/00222895.2023.2293007. Online ahead of print.ABSTRACTWe investigated postural stability through the margin of stability (MoS) while reaching and grasping an object with increasing difficulty levels in younger, fallers and non-fallers. Forty-five individuals distributed into three groups participated in this study: younger adults (YA), non-fallers (OA), and fallers (FOA). They stood upright and reached and grasped a dowel. Six conditions combining the stability of the dowel's base and obstacles close to the dowel were manipulated to characterize different difficulty levels. We comp...
Source: Journal of Motor Behavior - December 18, 2023 Category: Neurology Authors: Natalia Madalena Rinaldi Renato Moraes Source Type: research

Bilateral Transfer of a Visuomotor Task in Different Workspace Configurations
This study assessed whether bilateral transfer of a visuomotor adaptation task changes with workspace configuration manipulation. Ninety-six right-handed young adults were assigned to one of three workspace locations, i.e., ipsilateral, contralateral, and central. Within each workspace were two retention groups (RRR/LLL) and two bilateral transfer groups (RLR/LRL). Performance before and after training was collected to determine direct and after-effects. We observed an asymmetric transfer of pathlength (left to right) but no ensuing after-effect. However, the transfer of movement time and normalized jerk was symmetric in t...
Source: Journal of Motor Behavior - December 18, 2023 Category: Neurology Authors: Reuben N Addison Arend W A Van Gemmert Source Type: research

Postural Stability When Grasping an Object While Standing: Younger and Older Adults (Fallers and Non-Fallers)
J Mot Behav. 2023 Dec 18:1-7. doi: 10.1080/00222895.2023.2293007. Online ahead of print.ABSTRACTWe investigated postural stability through the margin of stability (MoS) while reaching and grasping an object with increasing difficulty levels in younger, fallers and non-fallers. Forty-five individuals distributed into three groups participated in this study: younger adults (YA), non-fallers (OA), and fallers (FOA). They stood upright and reached and grasped a dowel. Six conditions combining the stability of the dowel's base and obstacles close to the dowel were manipulated to characterize different difficulty levels. We comp...
Source: Journal of Motor Behavior - December 18, 2023 Category: Neurology Authors: Natalia Madalena Rinaldi Renato Moraes Source Type: research

A Physically Active Lifestyle Can Protect against Age-Related Decline in Ankle Proprioception
This study examined whether physically active middle-aged (50-64 years) and older adults (65-80 years) demonstrate age-related ankle proprioceptive decline relative to younger counterparts. Empirical data indicate that ankle proprioception declines with aging and such sensory decline negatively affects balance. Using a passive motion apparatus, we employed a psychophysical forced-choice paradigm in which the ankle was passively plantarflexed to a reference position (15° or 25°) and a comparison position that was always smaller than the reference. Subsequently, participants indicated which position was more plantarflexed....
Source: Journal of Motor Behavior - December 14, 2023 Category: Neurology Authors: Jacquelyn V L Sertic Nicole Fall J ürgen Konczak Source Type: research

Approaching Process in Walking through an Aperture for Individuals with Stroke
J Mot Behav. 2023 Dec 4:1-11. doi: 10.1080/00222895.2023.2280259. Online ahead of print.ABSTRACTMuroi et al. show that individuals with stroke have improved collision avoidance behavior when passing through an aperture while entering from the paretic-side of the body. However, the underlying mechanism remains unknown. We reanalyzed Muroi et al.'s data to reveal how individuals with stroke walk through an aperture by examining changes in walking velocity and behavioral complexity (i.e., sample entropy, an index of (ir)regularity of time series, regarded lower entropy as more regular and less complex) by focusing on the appr...
Source: Journal of Motor Behavior - December 4, 2023 Category: Neurology Authors: Daisuke Muroi Kentaro Kodama Takayuki Tomono Yutaro Saito Aki Koyake Takahiro Higuchi Source Type: research