keyword
MENU ▼
Read by QxMD icon Read
search

Fast-spiking interneuron

keyword
https://www.readbyqxmd.com/read/29429614/inversely-active-striatal-projection-neurons-and-interneurons-selectively-delimit-useful-behavioral-sequences
#1
Nuné Martiros, Alexandra A Burgess, Ann M Graybiel
Understanding neural representations of behavioral routines is critical for understanding complex behavior in health and disease. We demonstrate here that accentuated activity of striatal projection neurons (SPNs) at the beginning and end of such behavioral repertoires is a supraordinate representation specifically marking previously rewarded behavioral sequences independent of the individual movements making up the behavior. We recorded spike activity in the striatum and primary motor cortex as individual rats learned specific rewarded lever-press sequences, each one unique to a given rat...
February 1, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29425490/fast-spiking-interneurons-supply-feedforward-control-of-bursting-calcium-and-plasticity-for-efficient-learning
#2
Scott F Owen, Joshua D Berke, Anatol C Kreitzer
Fast-spiking interneurons (FSIs) are a prominent class of forebrain GABAergic cells implicated in two seemingly independent network functions: gain control and network plasticity. Little is known, however, about how these roles interact. Here, we use a combination of cell-type-specific ablation, optogenetics, electrophysiology, imaging, and behavior to describe a unified mechanism by which striatal FSIs control burst firing, calcium influx, and synaptic plasticity in neighboring medium spiny projection neurons (MSNs)...
February 8, 2018: Cell
https://www.readbyqxmd.com/read/29405451/nicotinic-activity-layer-specifically-modulates-synaptic-potentiation-in-the-mouse-insular-cortex
#3
Hiroki Toyoda
Nicotinic acetylcholine receptors (nAChRs) in the insular cortex play an important role in nicotine addiction, but its cellular and synaptic mechanisms underlying nicotine addiction still remain unresolved. In layer 5 pyramidal neurons of the mouse insular cortex, activation of nAChRs suppresses synaptic potentiation through enhancing GABAergic synaptic transmission via activation of β2-containing nAChRs in non-fast-spiking (non-FS) interneurons. However, it has not been addressed whether and how activation of nAChRs modulates synaptic plasticity in layer 3 and 6 pyramidal neurons of the insular cortex...
February 6, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29359830/integrated-anatomical-and-physiological-mapping-of-striatal-afferent-projections
#4
Kyuhyun Choi, Elizabeth Holly, M Felicia Davatolhagh, Kevin T Beier, Marc V Fuccillo
The dorsomedial striatum, a key site of reward-sensitive motor output, receives extensive afferent input from cortex, thalamus and midbrain. These projections are integrated by striatal microcircuits containing both spiny projection neurons and local circuit interneurons. To explore target-cell specificity of these projections, we compared inputs onto D1-dopamine receptor positive spiny neurons, parvalbumin-positive fast-spiking interneurons and somatostatin-positive low-threshold-spiking interneurons, using cell-type specific rabies virus tracing and optogenetic-mediated projection neuron recruitment in mice...
January 23, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29358364/single-cell-stimulation-in-barrel-cortex-influences-psychophysical-detection-performance
#5
Nouk Tanke, J Gerard G Borst, Arthur R Houweling
A single whisker stimulus elicits action potentials in a sparse subset of neurons in somatosensory cortex. The precise contribution of these neurons to the animal's perception of a whisker stimulus is unknown. Here we show that single-cell stimulation in rat barrel cortex of both sexes influences the psychophysical detection of a near-threshold whisker stimulus in a cell type-dependent manner, without affecting false alarm rate. Counterintuitively, stimulation of single fast-spiking putative inhibitory neurons increased detection performance...
January 22, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29333742/parvalbumin-fast-spiking-interneurons-are-selectively-altered-by-pediatric-traumatic-brain-injury
#6
Joshua Nichols, George Reed Bjorklund, Jason Newbern, Trent Anderson
Pediatric traumatic brain injury (TBI) is a leading cause of death and disability in children. Traditionally, ongoing neurodevelopment and neuroplasticity have thought to confer children with an advantage following TBI. However, recent findings indicate that the pediatric brain may be more sensitive to brain injury. Inhibitory interneurons are essential for proper cortical function and implicated in the pathophysiology of TBI, yet few studies have directly examined for TBI induced changes to interneurons themselves...
January 15, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29330326/loss-of-balance-between-striatal-feedforward-inhibition-and-corticostriatal-excitation-leads-to-tremor
#7
Yael Oran, Izhar Bar-Gad
Fast-spiking interneurons (FSIs) exert powerful inhibitory control over the striatum and are hypothesized to balance the massive excitatory cortical and thalamic input to this structure. We recorded neuronal activity in the dorsolateral striatum and globus pallidus (GP) concurrently with the detailed movement kinematics of freely behaving female rats before and after selective inhibition of FSI activity using IEM-1460 microinjections. The inhibition led to the appearance of episodic rest tremor in the body part that depended on the somatotopic location of the injection within the striatum...
February 14, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29329401/morphological-and-functional-characterization-of-non-fast-spiking-gabaergic-interneurons-in-layer-4-microcircuitry-of-rat-barrel-cortex
#8
Vishalini Emmenegger, Guanxiao Qi, Haijun Wang, Dirk Feldmeyer
GABAergic interneurons are notorious for their heterogeneity, despite constituting a small fraction of the neuronal population in the neocortex. Classification of interneurons is crucial for understanding their widespread cortical functions as they provide a complex and dynamic network, balancing excitation and inhibition. Here, we investigated different types of non-fast-spiking (nFS) interneurons in Layer 4 (L4) of rat barrel cortex using whole-cell patch-clamp recordings with biocytin-filling. Based on a quantitative analysis on a combination of morphological and electrophysiological parameters, we identified 5 distinct types of L4 nFS interneurons: 1) trans-columnar projecting interneurons,2) locally projecting non-Martinotti-like interneurons, 3) supra-granular projecting Martinotti-like interneurons,4) intra-columnar projecting VIP-like interneurons,and5) locally projecting neurogliaform-like interneurons...
January 10, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29326172/diversity-and-connectivity-of-layer-5-somatostatin-expressing-interneurons-in-the-mouse-barrel-cortex
#9
Maximiliano José Nigro, Yoshiko Hashikawa-Yamasaki, Bernardo Rudy
Inhibitory interneurons represent 10-15% of the neurons in the somatosensory cortex, and their activity powerfully shapes sensory processing. Three major groups of GABAergic interneurons have been defined according to developmental, molecular, morphological, electrophysiological, and synaptic features. Dendritic-targeting somatostatin-expressing interneurons (SST-INs) have been shown to display diverse morphological, electrophysiological, and molecular properties and activity patterns in vivo However, the correlation between these properties and SST-IN subtype is unclear...
February 14, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29321592/amyloid-%C3%AE-causes-excitation-inhibition-imbalance-through-dopamine-receptor-1-dependent-disruption-of-fast-spiking-gabaergic-input-in-anterior-cingulate-cortex
#10
Si-Qiang Ren, Wen Yao, Jing-Zhi Yan, Chunhui Jin, Jia-Jun Yin, Jianmin Yuan, Shui Yu, Zaohuo Cheng
Alzheimer's disease (AD) is the most common cause of dementia in the elderly. At the early stages of AD development, the soluble β-amyloid (Aβ) induces synaptic dysfunction, perturbs the excitation/inhibition balance of neural circuitries, and in turn alters the normal neural network activity leading to cognitive decline, but the underlying mechanisms are not well established. Here by using whole-cell recordings in acute mouse brain slices, we found that 50 nM Aβ induces hyperexcitability of excitatory pyramidal cells in the cingulate cortex, one of the most vulnerable areas in AD, via depressing inhibitory synaptic transmission...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317600/altered-avalanche-dynamics-in-a-developmental-nmdar-hypofunction-model-of-cognitive-impairment
#11
Saurav Seshadri, Andreas Klaus, Daniel E Winkowski, Patrick O Kanold, Dietmar Plenz
Disturbed activity patterns in cortical networks contribute to the pathophysiology of schizophrenia (SZ). Several lines of evidence implicate NMDA receptor hypofunction in SZ, and blocking NMDA receptor signaling during early neurodevelopment produces cognitive deficits in rodent models that resemble those seen in schizophrenic patients. However, the altered network dynamics underlying these cognitive impairments largely remain to be characterized, especially at the cellular level. Here, we use in vivo two-photon calcium imaging to describe pathological dynamics, occurring in parallel with cognitive dysfunction, in a developmental NMDA receptor hypofunction model...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29302214/antidepressant-drug-paroxetine-blocks-the-open-pore-of-kv3-1-potassium-channel
#12
Hyang Mi Lee, Ok Hee Chai, Sang June Hahn, Bok Hee Choi
In patients with epilepsy, depression is a common comorbidity but difficult to be treated because many antidepressants cause pro-convulsive effects. Thus, it is important to identify the risk of seizures associated with antidepressants. To determine whether paroxetine, a very potent selective serotonin reuptake inhibitor (SSRI), interacts with ion channels that modulate neuronal excitability, we examined the effects of paroxetine on Kv3.1 potassium channels, which contribute to highfrequency firing of interneurons, using the whole-cell patch-clamp technique...
January 2018: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29289596/neuronal-activity-pattern-defects-in-the-striatum-in-awake-mouse-model-of-parkinson-s-disease
#13
Hui Chen, Huimeng Lei, Qunyuan Xu
Previous studies showed the loss of dopaminergic neurons directly leads to both changes in firing rate and neuronal synchrony in the striatum by pharmacogenetic approach, but physiological observation of striatal neurons in awake animal is rare up to now due to the limitation of recording methods. We use multichannel in vivo recording system, to record the activity pattern of both medium spiny projecting neurons (MSNs) and fast spiking interneurons (FSIs) in awake mouse model of Parkinson's disease (PD), created by injection of 6-hydroxyl-dopamine (6-OHDA) into dorsolateral striatum bilaterally and unilaterally...
December 29, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29235480/vocal-learning-promotes-patterned-inhibitory-connectivity
#14
Mark N Miller, Chung Yan J Cheung, Michael S Brainard
Skill learning is instantiated by changes to functional connectivity within premotor circuits, but whether the specificity of learning depends on structured changes to inhibitory circuitry remains unclear. We used slice electrophysiology to measure connectivity changes associated with song learning in the avian analog of primary motor cortex (robust nucleus of the arcopallium, RA) in Bengalese Finches. Before song learning, fast-spiking interneurons (FSIs) densely innervated glutamatergic projection neurons (PNs) with apparently random connectivity...
December 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29227249/eye-opening-differentially-modulates-inhibitory-synaptic-transmission-in-the-developing-visual-cortex
#15
Wuqiang Guan, Jun-Wei Cao, Lin-Yun Liu, Zhi-Hao Zhao, Yinghui Fu, Yong-Chun Yu
Eye opening, a natural and timed event during animal development, influences cortical circuit assembly and maturation; yet, little is known about its precise effect on inhibitory synaptic connections. Here, we show that coinciding with eye opening, the strength of unitary inhibitory postsynaptic currents (uIPSCs) from somatostatin-expressing interneurons (Sst-INs) to nearby excitatory neurons, but not interneurons, sharply decreases in layer 2/3 of the mouse visual cortex. In contrast, the strength of uIPSCs from fast-spiking interneurons (FS-INs) to excitatory neurons significantly increases during eye opening...
December 11, 2017: ELife
https://www.readbyqxmd.com/read/29214635/kv4-2-channel-activity-controls-intrinsic-firing-dynamics-of-arcuate-kisspeptin-neurons
#16
Philipe R F Mendonça, Victoria Kyle, Shel-Hwa Yeo, William H Colledge, Hugh P C Robinson
Kisspeptin neurons in the hypothalamus are critically involved in reproductive function, via their effect on GnRH neuron activity and consequent gonadotropin release. Kisspeptin neurons show an intrinsic irregularity of firing, but the mechanism of this remains unclear. To address this, we carried out targeted whole-cell patch-clamp recordings of kisspeptin neurons in the arcuate nucleus (Kiss1Arc ), in brain slices isolated from adult male Kiss-Cre:tdTomato mice. Cells fired irregularly in response to constant current stimuli, with a wide range of spike time variability, and prominent subthreshold voltage fluctuations...
December 6, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29206101/serotonin-enhances-excitability-and-gamma-frequency-temporal-integration-in-mouse-prefrontal-fast-spiking-interneurons
#17
Jegath C Athilingam, Roy Ben-Shalom, Caroline M Keeshen, Vikaas Sohal, Kevin Bender
The medial prefrontal cortex plays a key role in higher order cognitive functions like decision making and social cognition. These complex behaviors emerge from the coordinated firing of prefrontal neurons. Fast-spiking interneurons (FSIs) control the timing of excitatory neuron firing via somatic inhibition and generate gamma (30-100 Hz) oscillations. Therefore, factors that regulate how FSIs respond to gamma-frequency input could affect both prefrontal circuit activity and behavior. Here, we show that serotonin (5HT), which is known to regulate gamma power, acts via 5HT2A receptors to suppress an inward-rectifying potassium conductance in FSIs...
December 5, 2017: ELife
https://www.readbyqxmd.com/read/29166601/triple-function-of-synaptotagmin-7-ensures-efficiency-of-high-frequency-transmission-at-central-gabaergic-synapses
#18
Chong Chen, Rachel Satterfield, Samuel M Young, Peter Jonas
Synaptotagmin 7 (Syt7) is thought to be a Ca(2+) sensor that mediates asynchronous transmitter release and facilitation at synapses. However, Syt7 is strongly expressed in fast-spiking, parvalbumin-expressing GABAergic interneurons, and the output synapses of these neurons produce only minimal asynchronous release and show depression rather than facilitation. To resolve this apparent contradiction, we examined the effects of genetic elimination of Syt7 on synaptic transmission at the GABAergic basket cell (BC)-Purkinje cell (PC) synapse in cerebellum...
November 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/29149606/chronic-stress-alters-striosome-circuit-dynamics-leading-to-aberrant-decision-making
#19
Alexander Friedman, Daigo Homma, Bernard Bloem, Leif G Gibb, Ken-Ichi Amemori, Dan Hu, Sebastien Delcasso, Timothy F Truong, Joyce Yang, Adam S Hood, Katrina A Mikofalvy, Dirk W Beck, Norah Nguyen, Erik D Nelson, Sebastian E Toro Arana, Ruth H Vorder Bruegge, Ki A Goosens, Ann M Graybiel
Effective evaluation of costs and benefits is a core survival capacity that in humans is considered as optimal, "rational" decision-making. This capacity is vulnerable in neuropsychiatric disorders and in the aftermath of chronic stress, in which aberrant choices and high-risk behaviors occur. We report that chronic stress exposure in rodents produces abnormal evaluation of costs and benefits resembling non-optimal decision-making in which choices of high-cost/high-reward options are sharply increased...
November 16, 2017: Cell
https://www.readbyqxmd.com/read/29140973/a-coupled-oscillator-model-of-olfactory-bulb-gamma-oscillations
#20
Guoshi Li, Thomas A Cleland
The olfactory bulb transforms not only the information content of the primary sensory representation, but also its underlying coding metric. High-variance, slow-timescale primary odor representations are transformed by bulbar circuitry into secondary representations based on principal neuron spike patterns that are tightly regulated in time. This emergent fast timescale for signaling is reflected in gamma-band local field potentials, presumably serving to efficiently integrate olfactory sensory information into the temporally regulated information networks of the central nervous system...
November 15, 2017: PLoS Computational Biology
keyword
keyword
104011
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"