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The membrane lipid composition of human frontal and temporal cortices and white matter has been studied in 118 subjects, age 20-100 years. The brain specimens were selected from subjects who lived a normal social life and died suddenly and unexpectedly with no history of neurologic or psychiatric disease. Macroscopic and microscopic examinations ruled out(More)
Clinically optimal situations for primary nerve repair are rarely observed. Crushed nerve ends result in either suboptimal repair or a need for nerve grafting. Functional results after nerve surgery are relatively poor, including major sensory deficits, which may be due to the death of primary sensory neurons that follows the nerve injury. The aim of this(More)
Two cases of street violence directed to the skull base level and transverse to the cervical axis are described. No skeletal damage. The violence resulted in the so-called "traumatic subarachnoid haemorrhage", an often used, unspecified forensic "diagnosis"; it was here revealed to be due to rupture of the wall of the posterior inferior cerebellar artery(More)
So far, it remains largely unresolved to what extent neuronal noise affects behavioral responses. Here, we investigate, where in the human visual motion pathway noise originates that limits the performance of the entire system. In particular, we ask whether perception and eye movements are limited by a common noise source, or whether processing stages after(More)
The developmental profiles of the four major brain gangliosides, GM1, GD1a, GD1b, and GT1b, were examined in human frontal lobe covering the period from 10 fetal weeks to 80 years of age. The ganglioside concentration increased approx. 3-fold from the 10th gestational week to the age of about 5 years. Gangliosides GM1 and GD1a increased 12-15-fold during(More)
Brain weight, total solids, protein, and major lipids have been determined in 83 female and 101 male brains from subjects 20-100 years of age. The brain weight began to diminish at 20 years of age. The brain weight at 20 years for females: 1,368 +/- 26 and for males 1,632 +/- 27 g diminished at 100 years for females to 1,100 +/- 25 and for males to 1,266(More)
The membrane lipid composition of human brain has been studied in 21 men and 18 women 60-97 years of age. This brain tissue series is unique, because it has been obtained only from individuals who lived a normal social life in their own homes and died suddenly and unexpectedly from arteriosclerotic heart disease or ruptured aortic aneurysms. They had no(More)
Glycosphingolipids were determined in human spinal cord, cauda equina and femoral nerve of 10 subjects aged 20-70 years and in dorsal and ventral roots of four subjects aged 17-60 years. Myelin was isolated from corresponding tissue. Axons were isolated from the four specimens of dorsal and ventral roots. The concentration (mean and standard error of mean)(More)
We investigate the impact of monitor frame rate on the human ocular following response (OFR) and find that the response latency considerably depends on the frame rate in the range of 80-160 Hz, which is far above the flicker fusion limit. From the lowest to the highest frame rate the latency declines by roughly 10 ms. Moreover, the relationship between(More)
We briefly review the security of the ping-pong protocol in light of several attack scenarios suggested by various authors since the proposal of the protocol. We refute one recent attack on an ideal quantum channel, and show that a recent claim of falseness of our original security proof is erroneous.