Perceptual decisions about object shape bias visuomotor coordination during rapid interception movements

Barany, Deborah A.; Gómez-Granados, Ana; Schrayer, Margaret; Cutts, Sarah A.; Singh, Tarkeshwar

doi:10.1152/jn.00098.2020

Cited by 20 publications

(19 citation statements)

References 89 publications

(74 reference statements)

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“…2A). Possibly, participants in both groups initiated interception movements prematurely, before the decision-making process was complete to secure enough time to complete the movement since the total trial time was fixed and limited to 800-950 ms (Barany et al, 2020). The reaction time adjustments during Decision blocks were indeed shorter for interception movements than reaching movements for both groups, but even more pronounced among older adults (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The monitor displayed targets and a cursor representing the location of the right hand in a veridical horizontal plane. During the performance of the trials, the robot applied a constant background force (−3 N in the Y direction) to the handle and recorded movement position and velocity at 1000 Hz (Barany et al, 2020; Singh et al, 2017). Eye-tracking data was also recorded at 500 Hz using a video-based remote system (Eyelink 1000, SR Research, Ottawa, ON, Canada) and used to track fixations to begin each trial (see Experimental design and procedure ), but not analyzed further for the current study.…”

Section: Methodsmentioning

confidence: 99%

“…Experimental procedures and the young adult dataset were described in a recent study (Barany et al, 2020). In brief, participants performed rapid reaching and interception movements with their right hand (see Fig.…”

Section: Experimental Design and Proceduresmentioning

confidence: 99%

“…Overall, compared to the ventral stream, the dorsal stream exhibits early age-related decline in older adults (Langrová, J et al, 2006; Sciberras-Lim and Lambert, 2017). These differential age-related rates of decline in the two streams could affect many activities of daily living that require continuous and time-sensitive interactions between the two streams (Barany et al, 2020), but this has remained unexamined.…”

Section: Introductionmentioning

confidence: 99%

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Age-related deficits in rapid visuomotor decision-making

Gómez-Granados

Barany

Schrayer

et al. 2021

Preprint

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Many goal-directed actions that require rapid visuomotor planning and perceptual decision-making are affected in older adults, causing difficulties in execution of many functional activities of daily living. Visuomotor planning and perceptual decision-making are mediated by the dorsal and ventral visual streams, respectively, but it is unclear how age-induced changes in sensory processing in these streams contribute to declines in goal-directed actions. Previously, we have shown that in healthy adults task demands affect the integration of sensory information between the two streams and more motorically demanding tasks induce earlier decisions and more decision errors. Here, we asked the question if older adults would exhibit larger declines in interactions between the two streams during demanding motor tasks. Older adults (n=15) and young controls (n=26) performed a simple reaching task and a more demanding interception task towards virtual objects. In some blocks of trials, participants also had to select an appropriate movement based on the shape of the object. Our results showed that older adults made a similar number of initial decision errors during both the reaching and interception tasks but corrected fewer of those errors during movement. During the more demanding interception decision task, older adults made more decision- and execution-related errors than young adults, which were related to early initiation of their movements. Together, these results suggest that older adults have a reduced ability to integrate new perceptual information to guide online action, which may reflect impaired ventral-dorsal stream interactions.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Experimental Design and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Age-related deficits in rapid visuomotor decision-making

Gómez-Granados

Barany

Schrayer

et al. 2021

Preprint

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“…1A) was applied and it stayed on for the remainder of the trial. Background loads were applied to minimize unwanted hand movements (Singh et al 2017; Barany et al 2020). After a fixed delay of 1,700 ms, a fixation cross appeared in the middle of the screen (20 cm away from the center of the rectangle).…”

Section: Methodsmentioning

confidence: 99%

Object motion influences feedforward motor responses during mechanical stopping of virtual projectiles: A preliminary study

Kurtzer

Singh

2021

Preprint

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An important window into sensorimotor function is how we catch moving objects. Studies that examined catching of free-falling objects report that the timing of the motor response is independent of the momentum of the projectile, whereas the motor response amplitude scales with projectile momentum. However, this pattern may not be a general strategy of catching since objects accelerate under gravity in a characteristic manner (unlike object motion in the horizontal plane) and the human visual motion-processing system is not adept at encoding acceleration. Accordingly, we developed a new experimental paradigm using a robotic manipulandum and augmented reality where participants stabilized against the impact of a virtual object moving at constant velocity in the horizontal plane. Participants needed to apply an impulse that mirrored the object momentum to bring it to rest and received explicit feedback on their performance. In different blocks, object momentum was varied by an increase in its speed or mass. In contrast to previous reports on free falling objects, we observed that increasing object speed caused earlier onset of arm muscle activity and limb force relative to the impending time to contact. Also, arm force increased as a function of target momentum linked to changes in speed or mass. Our results demonstrate velocity-dependent timing to catch objects and a complex pattern of scaling to momentum.

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Functional changes in fusional vergence‐related brain areas and correlation with clinical features in intermittent exotropia using functional magnetic resonance imaging

Zhang

Fei

Wang

et al. 2023

Human Brain Mapping

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To explore the functional changes of the frontal eye field (FEF) and relevant brain regions and its role in the pathogenesis of intermittent exotropia (IXT) children via functional magnetic resonance imaging (fMRI). Twenty‐four IXT children (mean age, 11.83 ± 1.93 years) and 28 normal control (NC) subjects (mean age, 11.11 ± 1.50 years) were recruited. During fMRI scans, the IXT children and NCs were provided with static visual stimuli (to evoke sensory fusion) and dynamic visual stimuli (to evoke motor fusion and vergence eye movements) with binocular disparity. Brain activation in the relevant brain regions and clinical characteristics were evaluated. Group differences of brain activation and brain‐behavior correlations were investigated. For dynamic and static visual disparity relative to no visual disparity, reduced brain activation in the right FEF and right inferior occipital gyrus (IOG), and increased brain activation in the left middle temporal gyrus complex (MT+) were found in the IXT children compared with NCs. Significant positive correlations between the fusional vergence amplitude and the brain activation values were found in the right FEF, right IPL, and left cerebellum in the NC group. Positive correlations between brain activation values and Newcastle Control Scores (NCS) were found in the left MT+ in the IXT group. For dynamic visual disparity relative to static visual disparity, reduced brain activation in the right middle occipital gyrus, left cerebellum, and bilateral IPL was found in the IXT children compared with NCs. Significant positive correlations between brain activation values and the fusional vergence amplitude were found in the right FEF and right cerebellum in the NC group. Negative correlations between brain activation values and NCS were found in the right middle occipital gyrus, right cerebellum, left IPL, and right FEF in the IXT group. These results suggest that the reduced brain activation in the right FEF, left IPL, and cerebellum may play an important role in the pathogenesis of IXT by influencing fusional vergence function. While the increased brain activation in the left MT+ may compensate for this dysfunction in IXT children.

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Perceptual decisions about object shape bias visuomotor coordination during rapid interception movements

Cited by 20 publications

References 89 publications

Age-related deficits in rapid visuomotor decision-making

Age-related deficits in rapid visuomotor decision-making

Object motion influences feedforward motor responses during mechanical stopping of virtual projectiles: A preliminary study

Functional changes in fusional vergence‐related brain areas and correlation with clinical features in intermittent exotropia using functional magnetic resonance imaging

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