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interneurons and principal cells auditory thalamus

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https://www.readbyqxmd.com/read/27171164/auditory-tones-and-foot-shock-recapitulate-spontaneous-sub-threshold-activity-in-basolateral-amygdala-principal-neurons-and-interneurons
#1
Fran├žois Windels, Shanzhi Yan, Peter G Stratton, Robert Sullivan, James W Crane, Pankaj Sah
In quiescent states such as anesthesia and slow wave sleep, cortical networks show slow rhythmic synchronized activity. In sensory cortices this rhythmic activity shows a stereotypical pattern that is recapitulated by stimulation of the appropriate sensory modality. The amygdala receives sensory input from a variety of sources, and in anesthetized animals, neurons in the basolateral amygdala (BLA) show slow rhythmic synchronized activity. Extracellular field potential recordings show that these oscillations are synchronized with sensory cortex and the thalamus, with both the thalamus and cortex leading the BLA...
2016: PloS One
https://www.readbyqxmd.com/read/22514322/spatial-profile-of-excitatory-and-inhibitory-synaptic-connectivity-in-mouse-primary-auditory-cortex
#2
Robert B Levy, Alex D Reyes
The role of local cortical activity in shaping neuronal responses is controversial. Among other questions, it is unknown how the diverse response patterns reported in vivo-lateral inhibition in some cases, approximately balanced excitation and inhibition (co-tuning) in others-compare to the local spread of synaptic connectivity. Excitatory and inhibitory activity might cancel each other out, or, whether one outweighs the other, receptive field properties might be substantially affected. As a step toward addressing this question, we used multiple intracellular recording in mouse primary auditory cortical slices to map synaptic connectivity among excitatory pyramidal cells and the two broad classes of inhibitory cells, fast-spiking (FS) and non-FS cells in the principal input layer...
April 18, 2012: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/20685244/triadic-synaptic-interactions-of-large-corticothalamic-terminals-in-non-lemniscal-thalamic-nuclei-of-the-cat-auditory-system
#3
Hisayuki Ojima, Kunio Murakami
Large corticothalamic (CT) terminals, presumed to originate from cortical layer 5 pyramidal cells, are distributed predominantly in non-specific thalamic nuclei in mammals. In the auditory system, little is known about whether these CT projections participate in the synaptic aggregation referred to as the triad. We studied synaptic interactions of these terminals with neuronal elements in one of the auditory non-lemniscal thalamic nuclei, the dorsal nucleus of the medial geniculate complex (MGC), in cats. After injections of an anterograde tracer in the primary auditory cortex, areas containing labeled large terminals were examined using an electron microscope...
April 2011: Hearing Research
https://www.readbyqxmd.com/read/15525801/single-column-thalamocortical-network-model-exhibiting-gamma-oscillations-sleep-spindles-and-epileptogenic-bursts
#4
COMPARATIVE STUDY
Roger D Traub, Diego Contreras, Mark O Cunningham, Hilary Murray, Fiona E N LeBeau, Anita Roopun, Andrea Bibbig, W Bryan Wilent, Michael J Higley, Miles A Whittington
To better understand population phenomena in thalamocortical neuronal ensembles, we have constructed a preliminary network model with 3,560 multicompartment neurons (containing soma, branching dendrites, and a portion of axon). Types of neurons included superficial pyramids (with regular spiking [RS] and fast rhythmic bursting [FRB] firing behaviors); RS spiny stellates; fast spiking (FS) interneurons, with basket-type and axoaxonic types of connectivity, and located in superficial and deep cortical layers; low threshold spiking (LTS) interneurons, which contacted principal cell dendrites; deep pyramids, which could have RS or intrinsic bursting (IB) firing behaviors, and endowed either with nontufted apical dendrites or with long tufted apical dendrites; thalamocortical relay (TCR) cells; and nucleus reticularis (nRT) cells...
April 2005: Journal of Neurophysiology
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