Abnormalities of motor and praxis imagery in children with DCD

Motor Imagery of the Unaffected Hand in Children With Spastic Hemiplegia

“…In contrast, though the real movements of the L-HEMI group conformed to a logarithmic relationship, their imagined movements did not. This is in line with children with DCD (Wilson et al, 2001) and brain injury (Caeyenberghs, van Roon, Swinnen, & Smits-Engelsman, 2009) and adults with damage to the parietal cortex (Sirigu et al, 1996).…”

“…Real movements in the task are typically constrained by a speed-accuracy trade-off, best described by the logarithmic relationship of Fitts' law (Fitts, 1954). In typically developing populations, imagined movements are also similarly constrained, but in some motor impaired populations, such as children with Developmental Coordination Disorder, they are not (Maruff, Wilson, Trebilcock, & Currie, 1999;Wilson, Maruff, Ives, & Currie, 2001). …”

A comparison of motor imagery performance in children with spastic hemiplegia and developmental coordination disorder

“…DCD is not associated with any known neurological condition and its aetiology currently remains unexplained. However, a series of papers have provided evidence that suggests a deficit in the ability to utilise motor imagery effectively may underlie some of the motor impairment difficulties observed in children with this diagnosis (Deconinck, Spitaels, Fias, & Lenoir, 2009;Maruff, Wilson, Trebilcock, & Currie, 1999;Williams, Thomas, Maruff, Butson, & Wilson, 2006;Williams, Thomas, Maruff, & Wilson, 2008;Wilson et al, 2004;Wilson, Maruff, Ives, & Currie, 2001). Interestingly, a recent line of research has also begun examining whether motor imagery deficits may also be apparent in adolescents with hemiplegia, with these deficits adding to their already obvious motor execution difficulties (Mutsaarts, Steenbergen, & Bekkering, 2007;Steenbergen, van Nimwegen, & Crajé, 2007).…”

Perfil motor de crianças e adolescentes com deficiência mental moderada

“…Este fato confirma a associação de inteligência e organização espaço-temporal. Entre os déficits no processamento de informações, os relacionados a modalidades visoespaciais são os mais pronunciados entre indiví-duos com inabilidade de aprendizagem 22 .…”