Results 111 to 120 of about 22,217 (292)
Biased Random-Walk Learning: A Neurobiological Correlate to Trial-and-Error [PDF]
arXiv, 1993 Neural network models offer a theoretical testbed for the study of learning at the cellular level. The only experimentally verified learning rule, Hebb's rule, is extremely limited in its ability to train networks to perform complex tasks. An identified cellular mechanism responsible for Hebbian-type long-term potentiation, the NMDA receptor, is highly
arxiv
Instantons in the working memory: implications for schizophrenia [PDF]
arXiv, 1999 The influence of the synaptic channel properties on the stability of delayed activity maintained by recurrent neural network is studied. The duration of excitatory post-synaptic current (EPSC) is shown to be essential for the global stability of the delayed response.
arxiv
A neuroeconomic theory of bidirectional synaptic plasticity and addiction [PDF]
arXiv, 2011 Neuronal mechanisms underlying addiction have been attracting attention in neurobiology, economics, neuropsychiatry, and neuroeconomics. This paper proposes a possible link between economic theory of addiction (Becker and Murphy, 1988) and neurobiological theory of bidirectional synaptic plasticity (Bienenstock, Cooper, Munro, 1982) based on recent ...
arxiv
A head start: The relationship of placental factors to craniofacial and brain development
Developmental Dynamics, EarlyView.Abstract In recent years, the importance of placental function for fetal neurodevelopment has become increasingly studied. This field, known as neuroplacentology, has greatly expanded possible etiologies of neurodevelopmental disorders by exploring the influence of placental function on brain development.
Annemarie Jenna Carver +2 more
wiley +1 more source
Transcranial Bipolar Direct Current Stimulation of the Frontoparietal Cortex Reduces Ketamine-Induced Oscillopathies: A Pilot Study in the Sedated Rat [PDF]
arXiv, 2020 Running title: Frontoparietal anodal tDCS reduces ketamine-induced oscillopathies.Abstract: During the prodromal phase of schizophrenia with its complex and insidious clinical picture, electroencephalographic recordings detect widespread oscillation disturbances (or oscillopathies).
arxiv
European Journal of Neuroscience, Volume 56, Issue 12, Page 6141-6161, December 2022., 2022 Chemical synapses are tiny and overcrowded environments enriched with thousands of protein species. Many efforts have been devoted to developing sensors and actuators able to evaluate and control synaptic communication. Most of these recent tools are based on the engineering of one or more specific synaptic proteins used to target active moieties to ...
Jacopo Lamanna +3 more
wiley +1 more source
Astrocytic NMDA Receptors Modulate the Dynamics of Continuous Attractors [PDF]
arXivNeuronal networking supports complex brain functions, with neurotransmitters facilitating communication through chemical synapses. The release probability of neurotransmitters varies and is influenced by pre-synaptic neuronal activity. Recent findings suggest that blocking astrocytic N-Methyl-D-Aspartate (NMDA) receptors reduces this variation. However,
arxiv
Erratum: Corrigendum: NMDA-receptor activation increases cytoplasmic calcium concentration in cultured spinal cord neurones [PDF]
, 1986 Amy B. MacDermott +4 more
openalex +1 more source
PharmaceuticalsNeurodegenerative disorders (NDs) include a range of chronic conditions characterized by progressive neuronal loss, leading to cognitive, motor, and behavioral impairments.
Ayodeji Olatunde Egunlusi +1 more
doaj +1 more source