Biomedical subjects

R Beato

Publications and source records attributed to R Beato.

3 recordsLinked to original sources

PubMed2005

"Applause sign" helps to discriminate PSP from FTD and PD.

The "applause sign" is a simple test of motor control that helps to differentiate PSP from frontal or striatofrontal degenerative diseases. It was found in 0/39 controls, 0 of 24 patients with frontotemporal dementia (FTD), 0 of 17 patients with Parkinson disease (PD), and 30/42 patients with progressive supranuclear palsy (PSP). It discriminated PSP from FTD (p < 0.001) and PD (p < 0.00). The "three clap test" correctly identified 81.8% of the patients in the comparison PSP and FTD and 75% of the patients in the comparison of PSP and PD.

Aged↗

PubMed2003

[Neuropsychological evaluation can contribute to the diagnosis of movement disorders].

Neurodegenerative diseases of the extrapyramidal system can be difficult to identify, particularly those with discrete symptoms or a non-specific or polymorphous complex motor expression. Nevertheless, most of the patients with these diseases present a particular cognitive pattern so the neuropsychological evaluation can contribute significantly to diagnosis. Progressive supranuclear palsy, corticobasal degeneration, Huntington's disease, and Lewy body dementia can be easily identified on the basis of their distinctive motor and cognitive features. Clinical manifestations may be less specific in other diseases such as striatonigric degeneration or idiopathic Parkinson's disease. We present here the characteristic neuropsychological features of each of these diseases and their contribution to diagnosis.

Basal Ganglia Diseases↗

PubMed2002

Forced collectionism after orbitofrontal damage.

A collector is a person who collects things on purpose, either as a hobby or business, or for personal satisfaction, e.g., stamp, coin, or art collector. In such instances, the act of collecting things represents voluntary, controlled, goal-directed, selective searching. Pathologic patterns of collecting have been observed following brain damage, particularly frontal lobe damage, ranging from a tendency to grasp (prehension behavior) to an irrepressible need to seize surrounding objects and store them (hoarding behavior). These adnormal behaviors express an excessive adherence to environmental stimuli but in no way express a planned process directed toward specific items. In this article, we describe an unusual pattern of pathologic collecting behavior due to frontal lobe damage: involuntary irrepressible collecting that is goal-directed and selective. The authors report a patient who collected specifically household electrical appliances following a bilateral damage of orbito- and polar-prefrontal cortex. The patient had involuntary irrepressible collecting that was goal-directed and selective. This "forced collectionism" is different from that of the usual collectionism encountered in patients with frontal lobe lesions, as the latter is in no way a planned process directed toward specific items.

Adult↗