Crossed aphasia in a dextral

Acquired Crossed Aphasia in Dextral Children Revisited

“…On the common basis of a presumed incomplete language lateralization, application of the concepts of the standard doctrine in CAD established a decade later a near synergy between both aphasic conditions. In agreement with the standard view on ACA, Brown and Wilson (1973) defined CAD irrespectively of lesion location as a predominantly uniform aphasic syndrome consisting of nonfluent, agrammatic, and often transient language symptoms. This prototypical semiological pattern has been amply documented (see Coppens & Hungerford, 1998).…”

“…Brown and Wilson (1973), for instance, only considered cases compatible with the diagnosis of CAD when four basic criteria were met: (1) right-handedness with negative familial antecedents of left-handedness or ambidexterity, (2) absence of priorly sustained brain damage, (3) clear evidence for a right cerebral lesion with exclusion of an additional left hemisphere lesion, and (4) sufficiently documented aphasic semiology. From the literature up to 1973, they retained eight cases including their own.…”

“…Cultural and idiosyncratic factors such as bi-or polyglottism, illiteracy, tonal language use, and use of an ideographic script were introduced in the 1980s as additional exclusion criteria (e.g., Joanette, Puel, Nespoulous, Rascol, & Lecours, 1982). The latest tendency has been to reduce the number of exclusion criteria again to essentially the same criteria as proposed by Brown and Wilson (1973) (e.g., Faglia, Rottoli, & Vignolo, 1990). Brown and Hécaen (1973) were the first to define CAD as a semiologically uniform syndrome.…”

Neuropsychological analysis of a case of crossed aphasia: Implications for reversed laterality

“…Only recently has attention been focused on linguistic and nonlinguistic visuospatial functions. Brown and Wilson (1973) raise the possibility of left-hemisphere dominance for visuospatial ability in their study of a crossed aphasic. Taylor and Solomon's (1979) paper is an illuminating contrast to the Brown and Wilson study: They report visuospatial defects due to left-hemisphere lesion in a nonaphasic man with right-hemisphere language dominance.…”

Anomalous Cerebral Language Organization: Acquired Crossed Aphasia in a Dextral Child

“…On the basis of overt resemblances with this doctrine several influencial studies (e.g., Brown & Wilson, 1973;Brown & Hécaen, 1976) propagated that crossed aphasia in dextrals (CAD) represents a similar syndrome in adults. However, while CAD in adults was considered from its initial description onward a highly exceptional phenomenon (estimated incidence between 2 and 5%), it was not in children.…”