Coactivity
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. A interação entre artigos e patentes : um estudo cientométrico da comunicação científica e tecnológica em biotecnologia
As etapas do trabalho constituíram-se de busca nas bases de dados; limpeza e organização dos nomes de autores e de instituições; análises estatísticas e de redes sociais; correlação entre a co-invenção e co-autoria, a partir da ocorrência de autores co-ativos – que publicaram tanto patentes como artigos - nos dois tipos de documentos; correlaç
Publicado em: 2010
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2. Non-Hebbian properties of long-term potentiation enable high-capacity encoding of temporal sequences.
A hypothesis commonly found in biological and computational studies of synaptic plasticity embodies a version of the 1949 postulate of Hebb that coactivity of pre- and postsynaptic elements results in increased efficacy of their synaptic contacts. This general proposal presaged the identification of the first and still only known long-lasting synaptic plasti
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3. Enhanced learning after genetic overexpression of a brain growth protein
Ramón y Cajal proposed 100 years ago that memory formation requires the growth of nerve cell processes. One-half century later, Hebb suggested that growth of presynaptic axons and postsynaptic dendrites consequent to coactivity in these synaptic elements was essential for such information storage. In the past 25 years, candidate growth genes have been impli
The National Academy of Sciences.
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4. Function of bicoid and hunchback homologs in the basal cyclorrhaphan fly Megaselia (Phoridae)
The Drosophila gene bicoid functions at the beginning of a gene cascade that specifies anterior structures in the embryo. Its transcripts are localized at the anterior pole of the oocyte, giving rise to a Bicoid protein gradient, which regulates the spatially restricted expression of target genes along the anterior–posterior axis of the embryo in a co
The National Academy of Sciences.
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5. Effect of vibration on antagonist muscle coactivation during progressive fatigue in humans.
1. Biceps femoris antagonist coactivation increases during progressive fatigue. Our purpose was to determine if the mechanism that increases coactivation during fatigue is susceptible to vibration. Vibration drives alpha-motoneurons via the Ia loop, producing force without descending motor drive, and thus uncoupling antagonist and agonist activation. Evidenc
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6. The locomotor discharge characteristics of ankle flexor gamma-motoneurones in the decerebrate cat.
1. The discharge patterns of ankle flexor, tibialis anterior (TA), gamma-motoneurones were recorded during locomotion in the decerebrate cat. 2. At rest gamma-efferents had no background discharge. During locomotion two patterns of gamma activity could be distinguished. Most units (16) were phasically recruited with homonymous electroneurogram (ENG) activity