Impairments in the Visual Processing of Global Biological Motion Cues in Down Syndrome

Riddell, Hugh; Tolentino-Castro, J. Walter; Wagner, Heiko; Lappe, Markus

doi:10.1177/0301006617718716

Cited by 7 publications

(16 citation statements)

References 68 publications

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“…Thus it may be the case that the impaired processing of biological motion, such as observed in the current study and previous studies [29,35] may arise independently from motor impairments. Future research should focus on investigating these two possibilities.…”

Section: Discussionsupporting

confidence: 54%

“…Future research should focus on investigating these two possibilities. It may be the case that individuals with DS are unable to discriminate between gross motor movements as well discriminate differences of movement velocities, or attribute functionality to particular movements [29,35]. In addition it may be that an important attribute of motor dysfunction in DS individuals pertains to the inability to quickly combine visual and motor inputs [30,55].…”

Section: Discussionmentioning

confidence: 99%

“…A sample of 9 DS subjects, 3 female and 6 male, age M=17.22, SD=3.11, viewed spatially scrambled and normal PLWs that translated horizontally right or left across the computer screen, their task was to judge the direction of motion. Data and methods from this control experiment have been published previously in another study of our group [35].…”

Section: Methodsmentioning

confidence: 99%

“…Virji-Babul et al [29] have shown that individuals with DS perform worse than controls in tasks requiring the discrimination of PLWs from non-biological shapes and in the discrimination of emotion from PLWs. Riddell et al [35] have shown that these deficits likely stem from an inability to integrate global configural cues present in the PLW stimulus.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, we were also interested in reaction times on the task, as reaction times may indirectly reflect the outcome of the visuomotor processing [36,37]. Based on previous research showing that PLW perception is impaired, but not completely absent in individuals with DS [29,35], we hypothesized that in a behaviorally relevant task requiring subjects to compare PLW speeds, performance should be similar between the DS and control groups when differences in PLW walking speeds were relatively large. When the difference between the PLW speeds was small, however, we expected the control group to outperform the group with DS.…”

Section: Introductionmentioning

confidence: 99%

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Perception of Biological Motion Speed in Individuals with Down Syndrome

Tolentino-Castro¹,

Riddell²,

Wagner³

2017

J Down Syndr Chr Abnorm

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IntroductionAction and perception are two inherently linked aspects of human behavior that allow us to understand and interact with our surroundings. The interplay between action production and perception enables humans to act in a number of highly demanding situation such as unusual, novel or unstable environments [1]. Babies interact with their environment in a myriad of different ways such as imitation, selfmotion and observing the examples of others [2][3][4]. These interactions serve to shape not only their knowledge about the world, but also their understanding of the functionality of their bodies.Action performance interacts with action perception, and viceversa. This is reflected in the brain, as both performing and perceiving actions activate similar cortical areas [5]. Previous research has revealed significant interactions between action perception and action execution, and studies have shown that action perception can interfere with action execution reciprocally [6][7][8]. It is particularly insightful to study such interactions in populations with abnormal skeleto-muscular and/or neural development, as in these populations the brain may have adapted differently to handle physical differences, which in turn may influence how affected individuals interact with their surroundings. For example Sinha et al. [9] have shown that individuals with autism spectrum disorder, adapt their sensory input atypically, resulting in diverse behavioral traits. Down Syndrome (DS) is one of the most common genetic disorders (14 per 10 000 live births) caused by the presence of a complete or partial third copy of chromosome 21 (Trisomy 21) [10]. DS is a genetic change that impacts not only intellectual ability, but also motor development and motor control over the lifetime [11,12]. Abnormal brain functioning related to learning has been reveled in a number of studies [13][14][15][16]. In addition to neurodevelopmental abnormalities, corporal abnormalities are also common in DS. These abnormalities are highly related to the impaired motor control of voluntary movements [11,17].Children with DS require more time to learn basic movements. Additionally, as movement complexity increases they achieve gross motor functions at an average age that is almost twice that of typically developed children [18]. However, despite delays in motor development and the control of voluntary movements, the DS population does not exhibit a complete absence of the production of gross motor skills. For instance, individuals with DS are often capable of walking and jumping, as well as fine motor skills and manual dexterity. Examples of functional motor development can be seen when special teaching strategies are implemented [19][20][21][22][23][24]. This demonstrates that individuals with DS are at least somewhat able to adapt to their motor impairments. In more realistic tasks, Latash [11,17] argue that, when confronted with an unexpected or unclear motion situation, individuals with DS choose to act slowly (bradykinesia) during the initiation ph...

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Perception of Biological Motion Speed in Individuals with Down Syndrome

Tolentino-Castro¹,

Riddell²,

Wagner³

2017

J Down Syndr Chr Abnorm

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Motor development and Down syndrome

Alesi

Battaglia

2019

International Review of Research in Developmental Disabilities

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Individuals With Intellectual Disabilities Rely on Somatosensory Information Rather Than Visual Information to Catch a Ball

2021

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According to the literature, persons with intellectual disabilities have poor motor control in tasks in which motor anticipation is needed. Our study aimed to assess their motor behavior during interceptive tasks (a tennis ball interception with external-and-oneself throw conditions). A stick-bar was used as a reference or to support cloth to occlude a ball’s trajectory. Catch performance and interceptive behavior were analyzed (26 persons). The results show that high/low values of the initial approaching movement led to successful/successful catches, respectively. Our results are in line with the literature about the impact of poor motor control on performance in those with intellectual disabilities. We suggest that low anticipation may relate to problems in real-life situations.

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Impairments in the Visual Processing of Global Biological Motion Cues in Down Syndrome

Cited by 7 publications

References 68 publications

Perception of Biological Motion Speed in Individuals with Down Syndrome

Perception of Biological Motion Speed in Individuals with Down Syndrome

Motor development and Down syndrome

Individuals With Intellectual Disabilities Rely on Somatosensory Information Rather Than Visual Information to Catch a Ball

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