Results 81 to 90 of about 363,862 (308)

Meta-Potentiation: Neuro-Astroglial Interactions Supporting Perceptual Consciousness [PDF]

open access: yes, 2007
Conscious perceptual processing involves the sequential activation of cortical networks at several brain locations, and the onset of oscillatory synchrony affecting the same neuronal population.
Alfredo Pereira Jr, Fá
core   +2 more sources

Control over stress induces plasticity of individual prefrontal cortical neurons: A conductance-based neural simulation [PDF]

open access: yes, 2012
Behavioral control over stressful stimuli induces resilience to future conditions when control is lacking. The medial prefrontal cortex(mPFC) is a critically important brain region required for plasticity of stress resilience. We found that control over stress induces plasticity of the intrinsic voltage-gated conductances of pyramidal neurons in the ...
arxiv   +1 more source

Novel Solution‐Processed Fe2O3/WS2 Hybrid Nanocomposite Dynamic Memristor for Advanced Power Efficiency in Neuromorphic Computing

open access: yesAdvanced Science, EarlyView.
Solution‐processed approach for integration of Fe2O3/WS2 nano‐hybrid composite memristor devices. Remarkable switching characteristics and excellent durability for up to 105 cycles. The device shows ultra‐low energy consumption of 0.072 pJ and excellent environmental stability.
Faisal Ghafoor   +11 more
wiley   +1 more source

Eph and ephrin signaling in the development of the central auditory system

open access: yesDevelopmental Dynamics, Volume 252, Issue 1, Page 10-26, January 2023., 2023
Abstract Acoustic communication relies crucially on accurate interpretation of information about the intensity, frequency, timing, and location of diverse sound stimuli in the environment. To meet this demand, neurons along different levels of the auditory system form precisely organized neural circuits.
Jakub Krasewicz, Wei‐Ming Yu
wiley   +1 more source

Artificial synapses with photoelectric plasticity and memory behaviors based on charge trapping memristive system

open access: yesMaterials & Design, 2020
Imitation of memory and learning behaviors of nervous system by nanoscale photoelectric devices is highly desirable for building neuromorphic systems or even artificial neural networks.
Zhiliang Chen   +8 more
doaj  

The Mechanistic Basis for Successful Spinal Cord Stimulation to Generate Steady Motor Outputs

open access: yesFrontiers in Cellular Neuroscience, 2019
Electrical stimulation of the spinal cord is a promising rehabilitation intervention to restore/augment motor function after spinal cord injury (SCI).
Amr A. Mahrous   +4 more
doaj   +1 more source

Optimal Spike-Timing Dependent Plasticity for Precise Action Potential Firing [PDF]

open access: yesarXiv, 2005
In timing-based neural codes, neurons have to emit action potentials at precise moments in time. We use a supervised learning paradigm to derive a synaptic update rule that optimizes via gradient ascent the likelihood of postsynaptic firing at one or several desired firing times.
arxiv  

ANALYSIS OF THE SLOW EXCITATORY POSTSYNAPTIC POTENTIAL IN BULLFROG SYMPATHETIC GANGLION CELLS

open access: yesThe Japanese Journal of Physiology, 1976
The ionic mechanism of the slow excitatory postsynaptic potential (slow EPSP), i.e. the muscarinic action of acetylcholine (ACh), was studied either by stimulating preganglionic nerves or by applying ACh in curarized sympathetic ganglion cells of bullfrogs.
Kenji Kuba, Kyozo Koketsu
openaire   +3 more sources

α‐Synuclein Pathology Spreads in a Midbrain–Hindbrain Assembloid Model

open access: yesAdvanced Science, EarlyView.
A novel midbrain–hindbrain assembloid model demonstrates the spread of α‐synuclein pathology, a hallmark of Parkinson's disease, mimicking Braak's hypothesis. This model reveals how pathology propagates from the hindbrain to the midbrain, inducing synaptic changes and early signs of neuronal vulnerability. It offers an innovative platform for exploring
Gemma Gomez‐Giro   +14 more
wiley   +1 more source

Structure and evolution of neuronal wiring receptors and ligands

open access: yesDevelopmental Dynamics, Volume 252, Issue 1, Page 27-60, January 2023., 2023
Abstract One of the fundamental properties of a neuronal circuit is the map of its connections. The cellular and developmental processes that allow for the growth of axons and dendrites, selection of synaptic targets, and formation of functional synapses use neuronal surface receptors and their interactions with other surface receptors, secreted ...
Elena Cortés   +2 more
wiley   +1 more source

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