Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"synchronous activity"”.
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Winter vertical migration of Arctic zooplankton
… circadian rhythm analysis are applied to detect synchronous activity. South of 75°N, DVM continues throughout winter (albeit with reduced vertical amplitude when compared to other times of the year). DVM is seen to cease for a short period of time (up to 50 days) at latitudes between 75° and …
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Phenotypic And Electrophysiologic Characterization of a Mouse Model of Fragile X Syndrome
… barrel cortex of awake mice. Baseline spike activity was significantly lower in cortical neurons of Fmr1 KO mice. Synchronous activity at the LFP was strongly reduced in Fmr1 KO mice. Relative power in the delta range frequency band of LFP activity was significantly reduced in the neocortex …
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EEG Features of Working Memory Impairment in Alzheimer’s Dementia and Mild Cognitive Impairment
… Research has reliably shown that oscillatory activity, driven by repetitive and synchronous activity within and between neuronal populations, plays a significant role in memory functioning and can be accurately captured using electroencephalography (EEG). While resting-state studies have …
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Mechanisms of neuronal integration in adrenomedullary sympathetic preganglionic neurons.
… coupled AD-SPN. Electrotonic coupling promoted synchronous activity. An enhanced afterhyperpolarising potential facilitated transient termination of action potential firing forming bursts of activity. A role for calcium in the regulation of neuronal activity via action on electrotonic coupling …
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Effects of constitutive and acute Connexin 36 deficiency on brain-wide susceptibility to PTZ-induced neuronal hyperactivity
… primarily in neurons, is involved in the synchronous activity of neurons and may play a role in aberrant synchronous firing, as seen in seizures. To understand the reciprocal interactions between Cx36 and seizure-like neural activity, we examined three questions: a) does Cx36 deficiency …
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The Impact of Synchrony On Neuronal Coding and Behavior
… synaptic connectivity, how patterns of spiking activity propagate within columnar circuits when the state of the brain changes remains poorly understood. We used multi-electrode laminar arrays to reveal that brain state modulates the propagation of neural activity across the layers of early and …
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Spatio-temporal structure of thalamically evoked activity in the barrel cortex
… via thalamocortical pathways and ongoing activity thereby extracting the relevant details from spatio-temporal dynamic stimuli that carry information about the environment. In the course of this, the cortical response to the incoming information depends on the actual state of activity of …
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Neocortical Layer 4 to Layer 2/3 Sensory Information Processing Investigated with Digital-Light-Projection Neuronal Photostimulation
… the integration of synaptic input from multiple synchronous or temporally correlated presynaptic locations. Here we describe a system that allows the generation of arbitrary 2-D stimulus patterns with thousands of independently controlled sites to manipulate the activity of populations of neurons …
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Examining the Transient Neural Dynamics Underlying Working Memory Maintenance for Complex Visual Stimuli
… during the delay period, and how neural activity and connectivity are related to memory is critical for advancing both basic knowledge as well as informing declines in memory and cognition related to neurodegenerative diseases and healthy aging. An open question in the field of WM …
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Embedding of synchronous spike activity in cortical networks
… of evidence for temporal interrelations in brain activity exhibits precisely timed spikes to be part of an important information concept, justifying a closer inspection of the underlying network mechanisms. As one such model, synfire chains are special feed-forward subnetworks that allow for …