Overall Assessment of the Generalizability of Clinical Data

Although suggestive, clinical data are not ideal when one wants to extrapolate to healthy populations. In some cases, early onset of brain damage could have resulted in functional reorganization of language functions. Second, assessment of language deficits drawn from studies of aphasics and also from studies of epileptics (e.g., cortical stimulation and amytal data) has tended to weight language production more heavily than comprehension, no doubt because production deficits are easier to observe. Third, interpretation of severity of loss of language functions following aphasia is complicated by the fact that patients may compensate for their deficits by drawing on resources from the nondamaged areas. As a result, it becomes difficult to disentangle premorbid from postmorbid mobilization of brain resources (particularly, RH resources). In light of these problems, if one wants to extrapolate to brain organization of language in healthy individuals, it would be best to study them directly.

Approximately three decades ago it became possible to do just that, due to the refinement of techniques in experimental psychology enabling lateralized presentation of sensory input (whether auditory, visual, tactile, or even olfactory). Most of the techniques available to study brain lateralization in healthy individuals have been applied to bilingual populations.

Breaking Bulimia

Breaking Bulimia

We have all been there: turning to the refrigerator if feeling lonely or bored or indulging in seconds or thirds if strained. But if you suffer from bulimia, the from time to time urge to overeat is more like an obsession.

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