In this study the positron emission tomographic (PET)-18F-2-deoxy-2-fluoro-D-glucose (FDG) technique was used to study both normal aging and senile dementia. The results derived from 15 young normal subjects (mean age, 26 +/- 5 years) and 22 elderly normal subjects (mean age, 66 +/- 7 years) failed to indicate significant metabolic changes associated with age. A group of 24 patients with senile...

In the present paper we dealt with some aspects of Curves, curvature and Radius curvature. The aim this study lies in Curvature Parabola 2-dimenssions numerically using Matlab. Matlab is an interactive working environment which user can carry out quite complex computational tasks few commands. We followed applied mathematical method a new technique (Matlab) found that tow diminutionus more accu...

Three presynaptic neurons, monosynaptically connected to the medial cells of the pleural ganglion of Aplysia californica and previously shown to elicit cAMP-mediated diminutions in K conductance in those cells (Kehoe, 1985a, b), were shown to elicit still another slow synaptic current that resembles the cAMP-induced cationic current described in the preceding paper (Kehoe, 1990). The synaptic c...

Everyone is aware that the visual and auditory senses dim with age, and expects the elderly to need reading glasses and hearing aids. What about the chemical senses of smell and taste? The opening quotation shows that a decline in the ability to appreciate (“taste”) food and drink in old age was recognized thousands of years ago. But in what ways do our perceptions of the volatile and water-sol...

Everyone is aware that the visual and auditory senses dim with age, and expects the elderly to need reading glasses and hearing aids. What about the chemical senses of smell and taste? In what ways do our perceptions of the volatile and water-soluble molecules we smell and taste change? How pronounced is that change? And how early in life does it begin? Before addressing these questions, it is ...

tual impairment, are rather displacements than diminutions of capacity, and that besides, perhaps, securing the survival of the fittest, such manipulations are better borne by the young of uncivilized than of civilized tribes, he shows that the greater prevalence of insanity among civilized nations is due to the greater cranial capacity as shown by Drs. Barnard Davis and Pritchard ; while it ha...

The high comorbidity of Major Depressive Disorder (MDD), Anxiety Disorders (ANX), and Posttraumatic Stress (PTSD) has hindered the study their structural neural correlates. authors analyzed specific common grey matter volume (GMV) characteristics by comparing them with healthy controls (HC). meta-analysis voxel-based morphometry (VBM) studies showed unique GMV diminutions for each disorder (p <...

We examined mortality of Abies concolor (Gord. & Glend.) Lindl. (white fir) and Pinus lambertiana Dougl. (sugar pine) by developing logistic models using three growth indices obtained from tree rings: average growth, growth trend, and count of abrupt growth declines. For P. lambertiana, models with average growth, growth trend, and count of abrupt declines improved overall prediction (78.6% dea...