منابع مشابه
O12: The Heart and the Brain: Stroke Induced Heart Damage
Cardiac diseases are common post-stroke and are associated with increased morbidity and mortality. One possible mechanism of acute cardiac injury is the neurogenic myocardial damage, where the cerebral injury is disturbing the normal sympathetic and parasympathetic neuronal outflow to the heart leading to cardiac damage including myocardial infarctions. The exact mechanism is not completely und...
متن کاملSimulating brain damage.
In 1944 a young soldier suÝered a bullet wound to the head. He survived the war with a strange disability: although he could read and comprehend some words with ease, many others gave him trouble. He read the word antique as ÒvaseÓ and uncle as Ònephew.Ó The injury was devastating to the patient, G.R., but it provided invaluable information to researchers investigating the mechanisms by which t...
متن کاملEarly Brain Damage
Optimal Brain Damage (OBD) is a method for reducing the number of weights in a neural network. OBD estimates the increase in cost function if weights are pruned and is a valid approximation if the learning algorithm has converged into a local minimum. On the other hand it is often desirable to terminate the learning process before a local minimum is reached (early stopping). In this paper we sh...
متن کاملOptimal Brain Damage
We have used information-theoretic ideas to derive a class of practical and nearly optimal schemes for adapting the size of a neural network. By removing unimportant weights from a network, several improvements can be expected: better generalization, fewer training examples required, and improved speed of learning and/or classification. The basic idea is to use second-derivative information to ...
متن کاملCause of Brain Damage
When our experience of infants with hypernatraemic dehydration was reported 6 years ago from this hospital, the comment was made that, 'the follow-up period was, for many patients, too short to permit any evaluation of ultimate neurological status' (Macaulay and Blackhall, 1961). As far as we are aware no long-term studies of such patients have yet been published. This paper is a record of our ...
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ژورنال
عنوان ژورنال: Academic Medicine
سال: 2008
ISSN: 1040-2446
DOI: 10.1097/acm.0b013e318181d965