Results 101 to 110 of about 696,853 (368)

Automated scoring of pre-REM sleep in mice with deep learning

open access: yesScientific Reports, 2021
Reliable automation of the labor-intensive manual task of scoring animal sleep can facilitate the analysis of long-term sleep studies. In recent years, deep-learning-based systems, which learn optimal features from the data, increased scoring accuracies ...
Niklas Grieger   +4 more
doaj   +1 more source

Increased cortical excitability after selective REM sleep deprivation in healthy humans: a transcranial magnetic stimulation study [PDF]

open access: yes, 2013
REM sleep has antiepileptogenic properties whereas, its loss is known to have a proconvulsive role. However, the mechanisms underlying the proepileptogenic effects of REM sleep deprivation are yet not fully understood.
Albanese, M   +6 more
core   +1 more source

The Case of a 67‐Year‐Old Man With Memory Difficulties and Altered Sleep

open access: yes
Annals of Clinical and Translational Neurology, EarlyView.
Wesley Peng, Borna Bonakdarpour
wiley   +1 more source

Nuclear parcellation of pontine catecholaminergic and cholinergic neurons in gray parrots and pied crow brains

open access: yesThe Anatomical Record, EarlyView.
Immunohistochemical staining for tyrosine hydroxylase reveals the neurons forming the locus coeruleus complex in the pontine region of the brain of the Congo gray parrot. The appearance and parcellation of the locus coeruleus complex in birds shows many similarities, but also differences to that observed in mammals.
Pedzisai Mazengenya, Paul R. Manger
wiley   +1 more source

Finger Twitches are More Frequent in REM Sleep Than in Non-REM Sleep

open access: yesNature and Science of Sleep, 2020
Andrew M Reiter,1 Gregory D Roach,1 Charli Sargent,1 Leon Lack2 1Appleton Institute for Behavioural Science, Central Queensland University, Goodwood, SA 5034, Australia; 2College of Education, Psychology and Social Work, Flinders University of South ...
Reiter AM, Roach GD, Sargent C, Lack L
doaj  

Recycling spent synthesis liquor for enhanced production of ZIF‐67: Characterization and morphological insights

open access: yesChemNanoMat, Accepted Article.
This study reports the preparation and characterization of ZIF‐67 through the recycling of spent synthesis liquor containing unreacted 2‐methylimidazole. Materials were characterized using XRD, SEM, N2 physisorption, and SAXS. The recycling enhanced the yield of ZIF‐67 while maintaining the dodecahedral rhombic morphology of the particles. In the first
Lucas Leocadio Battiston   +5 more
wiley   +1 more source

REM Sleep-Dependent Bidirectional Regulation of Hippocampal-Based Emotional Memory and LTP.

open access: yesCerebral Cortex, 2016
Prolonged rapid-eye-movement (REM) sleep deprivation has long been used to study the role of REM sleep in learning and memory processes. However, this method potentially induces stress and fatigue that may directly affect cognitive functions.
P. Ravassard   +10 more
semanticscholar   +1 more source

Timing is everything: The effect of early‐life seizures on developing neuronal circuits subserving spatial memory

open access: yesEpilepsia Open, EarlyView.
Abstract Spatial memory, the aspect of memory involving encoding and retrieval of information regarding one's environment and spatial orientation, is a complex biological function incorporating multiple neuronal networks. Hippocampus‐dependent spatial memory is not innate and emerges during development in both humans and rodents.
Gregory L. Holmes
wiley   +1 more source

Effects of valerian extract on the sleep-wake cycle in sleep-disturbed rats. [PDF]

open access: yes, 2005
The present study was performed to investigate the effects of valerian extract on the sleep-wake cycle using sleep-disturbed model rats. A significant shortening in sleep latency was observed with valerian extract at doses of 1000 and 3000 mg/kg.
Fujimura, Katsuyuki   +3 more
core   +1 more source

Mapping the landscape of brain stimulation research: A global scientometric review on cognitive impairment

open access: yesIbrain, EarlyView.
This study maps global trends in brain stimulation research for cognitive impairment using bibliometric analysis of 4156 records (1989–2024, WoSCC). Findings highlight the dominance of transcranial magnetic stimulation (TMS) and repetitive TMS (rTMS), emerging vascular‐focused research, and promising techniques like fast gamma magnetic stimulation and ...
Mani Abdul Karim
wiley   +1 more source

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