Results 81 to 90 of about 242,255 (327)

Morris Water Maze Learning in Two Rat Strains Increases the Expression of the Polysialylated Form of the Neural Cell Adhesion Molecule in the Dentate Gyrus But Has No Effect on Hippocampal Neurogenesis [PDF]

open access: yes, 2005
In the current study, the authors investigated whether Morris water maze learning induces alterations in hippocampal neurogenesis or neural cell adhesion molecule (NCAM) polysialylation in the dentate gyrus.
Borght, Karin van der,   +4 more
core   +3 more sources

Polymer‐Incorporated Mechanically Compliant Carbon Nanotube Microelectrode Arrays for Multichannel Neural Signal Recording

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a soft microelectrode array based on vertically aligned carbon nanotube (CNT) forests, combining high conductivity with mechanical softness. A densification process and air‐pressure‐assisted flexibilization improve structural integrity, ensuring stable insertion and reduced inflammation.
Hyeonhee Roh   +8 more
wiley   +1 more source

Neurogenesis in the neonatal rat hippocampus is regulated by sexually dimorphic epigenetic modifiers

open access: yesBiology of Sex Differences, 2022
Highlights Neurogenesis in the dentate gyrus peaks in the early postnatal period and in the laboratory rat is significantly greater in males than females. Here we report divergent regulation of cell genesis in the neonatal dentate gyrus.
S. L. Stockman   +3 more
doaj   +1 more source

Synaptic plasticity and cognitive function are disrupted in the absence of Lrp4. [PDF]

open access: yes, 2014
Lrp4, the muscle receptor for neuronal Agrin, is expressed in the hippocampus and areas involved in cognition. The function of Lrp4 in the brain, however, is unknown, as Lrp4-/- mice fail to form neuromuscular synapses and die at birth.
Burden, Steven J   +2 more
core   +1 more source

High‐Spatiotemporal‐Resolution Transparent Thermoelectric Temperature Sensor Arrays Reveal Temperature‐Dependent Windows for Reversible Photothermal Neuromodulation

open access: yesAdvanced Functional Materials, EarlyView.
Thermoelectric temperature sensors are developed that directly measure heat changes during optical‐based neural stimulation with millisecond precision. The sensors reveal the temperature windows for safe reversible neural modulation: 1.4–4.5 °C enables reversible neural inhibition, while temperatures above 6.1 °C cause permanent thermal damage.
Junhee Lee   +9 more
wiley   +1 more source

Facile Deep Brain Electrode Coating with MXene for Improved Electrode Performance

open access: yesAdvanced Healthcare Materials, EarlyView.
Facile dip‐coating of commercial carbon fiber electrodes with Ti3C2Tx MXene improves electrical conductivity, reduces impedance, and enables single‐neuron recordings in the rat hippocampus over four weeks. The coating maintains biocompatibility, minimizes inflammation, and remains MRI‐compatible.
Laura Kondrataviciute   +5 more
wiley   +1 more source

Large-scale network organization in the avian forebrain: a connectivity matrix and theoretical analysis [PDF]

open access: yes, 2013
Many species of birds, including pigeons, possess demonstrable cognitive capacities, and some are capable of cognitive feats matching those of apes.
Bingman, VP   +4 more
core   +3 more sources

UV Laser‐Induced Carbon Microelectrode Arrays for Neuronal Recordings

open access: yesAdvanced Healthcare Materials, EarlyView.
Thin‐film electrodes are flexible devices of high conformability and minimal dimensions with attractive properties for in vivo and in vitro bioelectronics. Here, electrodes are developed from parylene films via ultraviolet laser‐induced carbonization.
Fulvia Del Duca   +10 more
wiley   +1 more source

Hippocampal sclerosis affects fMR-adaptation of lyrics and melodies in songs [PDF]

open access: yes, 2013
Songs constitute a natural combination of lyrics and melodies, but it is unclear whether and how these two song components are integrated during the emergence of a memory trace.
Alonso, Irene   +6 more
core   +4 more sources

Revisiting Ferroelectric‐Gated Phototransistors: A Tripartite Synapse‐Inspired Approach to In‐Sensor Image Processing

open access: yesAdvanced Materials, EarlyView.
A ferroelectric‐gated phototransistor (FGPT) enables linear and multilevel modulation of photoconductance through partial polarization switching and photogating effects. The device achieves photonic non‐volatility over a 153 dB dynamic range and performs in‐sensor processing under unstructured illumination, demonstrating enhanced face recognition ...
Yubin Lee   +13 more
wiley   +1 more source

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