Much controversy surrounds the language production abilities of traumatically head-injured adults. In this study, the narrative skills of head-injured and normal adults are examined and compared on the amount, rate, and distribution of information in a picture description task. The head-injured adults, all of whom were at least six months postinjury, were… (More)
The goal of these experiments was to test the hypothesis that serotonin (5-HT) is involved in facilitation of the shortening reflex in the leech Hirudo medicinalis. For this reason, we have used the toxin 5-hydroxytryptamine (5,7-DHT) to deplete serotonin from the nervous systems of intact leeches and have assessed the effect on early facilitation,… (More)
Evaluation of certain communication skills in head-injured adults has generally been limited to informal clinical impressions. A rating scale has been developed which addresses several of these communication abilities in a behaviourally based model. Preliminary data based on a sample of four head-injured adults and four trained raters revealed robust inter-… (More)
The narrative production of adults with probable dementia of Alzheimer's type (DAT) was investigated to determine the extent to which cognitive or linguistic deficits might explain the breakdown of discourse production. The structure of narrative tasks was manipulated so that the relationships among task structure and language production corresponded to… (More)
The patient was a 41 year-old Mexican American women who presented with a decrease in visual acuity along with periorbital and peripheral edema. She was diagnosed with bilateral serous retinal detachment and diffuse proliferative lupus nephritis. She improved considerably in hospital after treatment with corticosteroids.