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.
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Showing 1 to 20 of 58 for “"Thalamocortical"”.
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Thalamocortical forward modulation in the auditory cortex
… characteristics at each site, particularly the thalamocortical system - the primary sensory input to the auditory cortex. This study implemented an in vivo thalamocortical model in C57 mice along with common electrophysiological techniques to examine the pure role of the thalamocortical system …
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Neuromodulation of Inhibitory Activity in Thalamocortical Circuits
In last chapter, I demonstrate that the inhibitory currents arising from interneurons and TRN neurons can be distinguished by their kinetics. The local interneurons are of interest because these neurons have two distinct outputs: axonal and dendritic. These cells have classical axonal outputs, …
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Parietal thalamocortical circuitry in global dream cessation
Until relatively recently, the overarching agreement in the clinical literature was that total cessation of dreaming is related to posterior parietal lesions. Two recent case reports (Bischof and Bassetti, 2004; Poza and Martí-Massó, 2006), in which patients with medial occipital lesions …
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Neuronal Correlates of Reward Contingency in the Rat Thalamocortical System
… the primary areas that comprise the trigeminal thalamocortical pathway. In anesthetized animals, neuronal activity in the somatosensory system has been extensively described over the past century. However, it is still unclear how the different thalamocortical structures contribute to active …
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Biophysical model of core & matrix thalamocortical circuitry in rodents & primates
… thalamic reticular nucleus compose the thalamocortical system that is responsible for sensory processing and attention, during wakeful states, and sleep spindle generation, during sleep states. The TC system is divided into two sub-circuits, the core and matrix, the former involved with …
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Alpha thalamocortical networks during propofol general anesthesia and disorders of consciousness
… EEG of patients during recovery from DoC. To map thalamocortical networks involved in propofol-induced unconsciousness, we conducted coherence analysis of alpha networks in intracranial EEG recorded in patients with pharmacologically-refractory epilepsy and performed probabilistic tractography …
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Strength and dendritic organization of thalamocortical synapses onto excitatory layer 4 neurons
… studies have suggested that enhanced efficacy of thalamocortical (TC) relative to corticocortical (CC) synapses explains the effectiveness of the thalamus. We investigated possible key anatomical and physiological differences between these inputs onto excitatory L4 neurons in vivo. We developed a …
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Impact of Thalamocortical Synaptic Transmission on Input specific plasticity in Mouse Auditory Cortex
… of the thalamus; implicating that, auditory thalamocortical system is important for frequency-specific receptive field plasticity. Up and down regulation of synaptic strength, i.e. long-term potentiation (LTP) and long-term depression (LTD) of thalamocortical synaptic transmission is proposed …
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In vitro detection of cues that guide thalamocortical development : a role for chondroitin sulfate proteoglycans
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Brain and Cognitive Sciences, 1996.
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Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
… assessment of synaptic plasticity in the thalamocortical visual pathway found both general (changes in short-term plasticity in both cerebral hemispheres) and localized changes (greater LTP levels in the hemisphere contralateral to the open eye). The enhanced LTP in the primary visual …
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Regulation of Thalamic Neuron Excitability and Intrathalamic Rhythms by Vasoactive Intestinal Peptide
… role in regulating information transfer through thalamocortical circuits by modulating excitability of thalamocortical neurons.
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Novel EphB Receptor Forward Signaling Pathways in the Development of Major White Matter Tracts of the Mammalian Brain
… callosum, and the reciprocal corticothalamic and thalamocortical axon pathways. I specifically present data in which I demonstrate that Vav2 and Vav3 GEF (guanine nucleotide exchange factor) molecules form a specific forward signaling interaction with the EphB1 receptor that is essential for the …
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Spatio-temporal structure of thalamically evoked activity in the barrel cortex
… integrates incoming information conveyed 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 …
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THE EFFCT OF LOW-LEVEL LEAD ON SEROTONIN EXPRESSION IN THE DEVELOPING MOUSE SUPERIOR OLIVARY COMPLEX AND SOMATOSENSORY CORTEX
… sensory neurons, including LSO neurons and thalamocortical neurons of the somatosensory system, transiently take up 5-HT from the extracellular environment through the transient expression of the serotonin reuptake transporter SERT. Maintenance of appropriate 5-HT levels is important for …
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THE EFFCT OF LOW-LEVEL LEAD ON SEROTONIN EXPRESSION IN THE DEVELOPING MOUSE SUPERIOR OLIVARY COMPLEX AND SOMATOSENSORY CORTEX
… sensory neurons, including LSO neurons and thalamocortical neurons of the somatosensory system, transiently take up 5-HT from the extracellular environment through the transient expression of the serotonin reuptake transporter SERT. Maintenance of appropriate 5-HT levels is important for …
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Unterschiedliche Generierung niedrig- und hochfrequenter Komponenten somatosensorisch evozierter Potenziale (SEP) beim Menschen
… points to a “precortical” source in terminals of thalamocortical fibers and a second intracortical HFO origin. Furthermore, HFOs are also generated at subcortical and even subthalamic sites. Near thalamic, the HFO and low frequency signals are generated or modulated by different neuron populations …
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Subcortical Inputs Governing Cortical Network Activity
… information propagates through the cortex. The thalamocortical projection to layer 4 (L4) of primary sensory cortex is thought to be the main route by which information from sensory organs reaches the neocortex. Sensory information is believed to then propagate through the cortical column along …
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Ethosuximide stabilizes sleep-related oscillations and reduces sleep fragmentation during alcohol withdrawal
… activity between the thalamus and cortex (or thalamocortical oscillations). Sleep-related oscillations (SROs) in neuronal activity are a subset of thalamocortical oscillations that occur during the rapid eye movement (REM) and, more importantly, non-REM (NREM) stages of sleep. T-type calcium …
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Microsystem Based on CMOS Multielectrode Array for Extracellular Neural Stimulation and Recording
… with neurons in both dispersed culture and acute thalamocortical slices. Experimental results verify the array functionality by attaining high-resolution stimulation of dispersed primary hippocampal neuronal cultures. Neuronal activity induced from stimulation is detected through changes in …
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Brain Dynamics When Alertness Fluctuates but Attentional Demands Persist
… was associated with widespread increased thalamocortical synchronisation. In contrast, active task engagement, but not passive listening, led to increased synchronisation between the auditory cortex and the rest of the brain. These findings suggested that sustained auditory attention …
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