Results 31 to 40 of about 3,075,584 (328)
Photoionization cross section in a spherical quantum dot: Effects of some parabolic confining electric potentials [PDF]
Condens. Matter Phys., vol. 20, No. 2, 23703 (2017), 2017 A theoretical investigation of the effects of spatial variation of confining electric potential on photoionization cross section (PCS) in a spherical quantum dot is presented. The potential profiles considered here are the shifted parabolic potential and the inverse lateral shifted parabolic potential compared with the well-studied parabolic potential.
arxiv +1 more source
Long term potentiation depends on release of D-serine from astrocytes
Nature, 2009 Long-term potentiation (LTP) of synaptic transmission provides an experimental model for studying mechanisms of memory. The classical form of LTP relies on N-methyl-d-aspartate receptors (NMDARs), and it has been shown that astroglia can regulate their ...
C. Henneberger +3 more
semanticscholar +1 more source
Long Term Potentiation as a Mechanism for Learning and Memory [PDF]
Cell Journal, 2009 Since the 1970s when long term potentiation (LTP) was introduced to the scientific world;several studies have been devoted to determining whether this phenomenon is naturally abasic mechanism of learning and memory in mammalian brains. However, plenty of
Gholamali Hamidi +2 more
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European Journal of Cell Biology, 2023 Dendritic spines form the postsynaptic compartment of most excitatory synapses in the vertebrate brain. Morphological changes of dendritic spines contribute to major forms of synaptic plasticity such as long-term potentiation (LTP) or depression (LTD ...
Anika Heinze, Marco B. Rust
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Erythropoietin enhances hippocampal long-term potentiation and memory
BMC Biology, 2008 Background Erythropoietin (EPO) improves cognition of human subjects in the clinical setting by as yet unknown mechanisms. We developed a mouse model of robust cognitive improvement by EPO to obtain the first clues of how EPO influences cognition, and ...
El-Kordi Ahmed +19 more
doaj +1 more source
XMem: Long-Term Video Object Segmentation with an Atkinson-Shiffrin Memory Model [PDF]
European Conference on Computer Vision, 2022 We present XMem, a video object segmentation architecture for long videos with unified feature memory stores inspired by the Atkinson-Shiffrin memory model. Prior work on video object segmentation typically only uses one type of feature memory.
Ho Kei Cheng, A. Schwing
semanticscholar +1 more source
Effects of intra-dentate gyrus microinjection of myokine irisin on long-term potentiation in male rats [PDF]
Arquivos de Neuro-Psiquiatria, 2020 Induction of long-term potentiation (LTP) increases the storage capacity of synapses in the hippocampal dentate gyrus (DG). Irisin is a myokine generated from FNDC5 (a gene precursor) during exercise.
Saeed Mohammadi +4 more
doaj +1 more source
Long-term potentiation in the hippocampus: discovery, mechanisms and function
Neuroforum, 2018 In this review we reflect upon our contributions to the study of the properties and mechanisms of long-term potentiation (LTP) and describe some of the major influences on our work. We then go on to consider whether LTP has fulfilled its early promise of
T. Bliss +3 more
semanticscholar +1 more source
Repetitive transcranial magnetic stimulation in psychiatry
Annals of Indian Academy of Neurology, 2011 Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive and relatively painless tool that has been used to study various cognitive functions as well as to understand the brain-behavior relationship in normal individuals as well as in those ...
Biswa Ranjan Mishra +5 more
doaj +1 more source
Purkinje cells translate subjective salience into readiness to act and choice performance
Cell Reports, 2021 Summary: The brain selectively allocates attention from a continuous stream of sensory input. This process is typically attributed to computations in distinct regions of the forebrain and midbrain.
Lorenzo Bina +4 more
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