To determine the limits of human observers' ability to identify visually presented American Sign Language (ASL), the contrast s and the amount of additive noise n in dynamic ASL images were varied independently. Contrast was tested over a 4:1 range; the rms signal-to-noise ratios (s/n) investigated were s/n = 1/4, 1/2, 1, and infinity (which is used to designate the original, uncontaminated ima...

An elderly patient with thyrotoxicosis complicated by lack of classical clinical signs and normal conventional tests is described. The picture was compounded by development of apathy and depression. This is the second case report of apathetic T3 thyrotoxicosis in the literature. Such a clinical entity can easily be overlooked, but represents one of the treatable disorders of 'old age depression'.

The introductory graphic represents the identity conflict that author experiences daily. terms represent labels assigned to in past, barriers Autistic people must constantly overcome, and some of social rules has very consciously intentionally adopted "fit in" with society. accompanying experience piece outlines difficulties experienced suggest there needs be more awareness Canadian society reg...

Mastoiditis is a common clinical entity that is technically present in all cases of otitis media; only a minority of cases actually represents the otolaryngologic emergency of acute coalescent mastoiditis. When reviewing an image with a radiologic diagnosis of mastoiditis, looking for key signs such as destruction of bony septa and considering patient presentation can help distinguish mild mast...

A 48-year-old man presented with signs of pseudobulbar palsy. On computed tomography (CT) he was found to have extensive tissue loss in the region of the sylvian fissure and insula bilaterally. This appearance on CT represents the radiological correlate to anatomic descriptions of the operculum syndrome, and is useful in distinguishing the condition from pseudobulbar palsy.

In conclusion, we believe the intermittent function of the Nellcor N-100 pulse oximeter noted during positive pressure ventilation associated with hypovolaemia in neonates and small children represents an important clinical observation which can help guide intraoperative fluid management. Anaesthetists should use this and other clinical signs to provide appropriate fluid administration, since t...

Scientists widely agree that species extinction has heavily accelerated in the last decades. A grave problem for the conservation of diversity is the still very fragmentary knowledge of the ecology of most species. Attempts of sustainable management and conservation must integrate local communities and their traditional knowledge. Management decisions need to include the high importance of natu...

Cutaneous manifestations of thyroid disease are protean in nature and can be divided into specific lesions such as the thyroglossal duct cyst and cutaneous metastases from thyroid malignancy, nonspecific signs secondary to thyroid hormone imbalance, and associated dermatologic and systemic disorders. This review represents a summary and update of thyroid disease and the skin.

Headache of subacute onset, associated with other signs of increased intracranial pressure, represents the most frequent symptom of cerebral thrombophlebitis. We report a case of subarachnoid hemorrhage as a rare presentation of cerebral thrombophlebitis. Unfractionated intravenous heparin treatment resulted in resolution of subarachnoid hemorrhage on control brain CT scan and quick clinical re...