Spastic diplegia

Spasticity mainly affecting the lower limbs; typically there is involvement of the upper limbs, but to a milder degree. First described by William John Little (1810-1894) in 1862. See Cerebral palsy, Grasp response, Periventricular leucomalacia (PVL), Periventricular leucomalacia (PVL), Spasticity

Space code principle

Neural coding according to this principle is based on the assumption that neural activation indicates the presence or absence of information, while the location of the neurone in the network determines what the information is about. Cortical neurons are assumed to implement the space code principle.  See Activation (in a connectionist model),, Neuron, Ventral pathway (or …

Somites

Block-like masses of mesoderm, arranged in pairs lateral to the notochord and neural tube from which the vertebral column and musculature arise.  See Dermomyotome, Epimere, Hypomere, Mesoderm, Myotome, Neural tube, Neurulation, Notochord, Sclerotome

Solipsism

Literally ‘only onself-ism’.  Related to scepticism (any view doubting whether something exists or is just a figment of our imagination).  Solipsism holds to the belief that nothing exists outside our own minds or that nothing can be shown to exist.  Piaget held that the newborn behaves as a solipsist.  See Constructivism, Other minds problem

Sociometry

Procedures in which children individually nominate the peers whom they like (attraction) and dislike (repulsion) the most.  In other words, they establish a child’s status in his or her peer group in terms of popularity or rejection.  The most widely used sociometric procedure is that to found in Coie, J.D., & Dodge, K.A. (1983). Continuities …