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Carmen Cadarso-Suárez and others, Flexible Modelling of Neuron Firing Rates Across Different Experimental Conditions: An Application to Neural Activity in the Prefrontal Cortex During a Discrimination Task, Journal of the Royal Statistical Society Series C: Applied Statistics, Volume 55, Issue 4, August 2006, Pages 431–447, …
Spatial navigation assumes a crucial role in the survival of animals and involves complex cognitive processes such as sensing, encoding, and memory [].It is …
Abstract. In many cortical neurons, HCN1 channels are the major contributors to I h, the hyperpolarization-activated current, which regulates the intrinsic properties of neurons and shapes their integration …
The phenomenon that neurons in the auditory cortex under anaesthesia respond to sounds with phasic discharges irrespective of stimulus duration has been …
The firing arm should be pushed forward, and the weak side arm should be pulled back. This helps lock in the upper body and is a great way to control recoil. In the Isosceles stance, the body faces straight on to the target, with the arms pushed out, shoulders rolled forward, and the upper body leaning forward with 60% of the weight on …
The predicted fMRI signals derived from single units and the measured fMRI signals from auditory cortex showed a highly significant correlation (r = 0.75, P < 10-47). Thus, fMRI signals can provide a reliable measure of the firing rate of human cortical neurons.
The prefrontal cortex and striatum form a recurrent network whose spiking activity encodes multiple types of learning-relevant information. This spike-encoded information is evident in average firing rates, but finer temporal coding might allow multiplexing and enhanced readout across the connected the network. We tested this …
In the visual cortex, this gating of NMDARs by membrane depolarization causes them to influence neuronal firing rates multiplicatively, with strong effects on …
1. Introduction. Persistent firing, a repetitive neural spiking that persists beyond the triggering stimulus, has been observed in vivo during working memory and temporal association tasks in both humans and animals [1,2,3,4,5,6,7,8].It is believed that persistent firing supports short-term retention of information during these tasks typically for up to …
Dopamine modulation in the prefrontal cortex is important for cognitive processing and disrupted in diverse neuropsychiatric diseases. Activation of D1 receptors is thought to enable working memory by enhancing the firing properties of pyramidal neurons. However, these receptors are only sparsely expressed in the prefrontal cortex, and how …
Representation of interval timing by temporally scalable firing patterns in rat prefrontal cortex Min Xua,1, Si-yu Zhanga,1, Yang Danb, and Mu-ming Pooa,2 aInstitute of Neuroscience, State Key Laboratory of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China; and bDivision of …
This contradicts the earlier studies which indicated the role of TRPC4 and 5 channels on persistent firing cortex using pharmacological tools as well as TRPC4/5 binding peptide in the same cell type in the medial entorhinal cortex [24,55]. Nevertheless, the results from the TRPC hepta-KO mice clearly indicate that persistent firing can be ...
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In contrast to the intact cortex in vivo, neuronal spontaneous firing is low, and the network activities are almost absent in cortical slices in vitro. By lowering extracellular Mg 2+, NMDA receptor-dependent synchronized seizures can be induced in vitro, including epochs of 4–10 Hz synchronized activity ( Thomson and West, 1986 ; …
The current work introduces the possibility that inhibition of ilPFC shifts the firing pattern of the RE neuron population from bursting to tonic firing, while stimulation of ilPFC was …
The spatially localized firing fields in the cortex and hippocampus allowed us to establish repeatable multicell firing sequences in both areas during the spatial task (Fig. 4a,b, lap). Different ...
This contradicts the earlier studies which indicated the role of TRPC4 and 5 channels on persistent firing cortex using pharmacological tools as well as TRPC4/5 binding peptide in the same cell type in the …
Representation of interval timing by temporally scalable firing patterns in rat prefrontal cortex. Min Xu, a, 1 Si-yu Zhang, a, 1 Yang Dan, b and Mu-ming Poo a, 2 Author ... the firing profiles for each neuron during 1.5-s and 2.5-s tasks closely resembled each other and matched well after temporally scaling the 2.5-s profile by a factor of ∼ ...
The medial prefrontal cortex (mPFC) and ventral hippocampus (vHPC) functionally interact during innate anxiety tasks. To explore the consequences of this interaction, we examined task-related firing of single units from the mPFC of mice exploring standard and modified versions of the elevated plus maze (EPM), an innate anxiety …
Not only are bullets getting smarter, but the U.S. Army is developing an exoskeleton that automatically and effortlessly steadies a soldier's firing arm. There are …
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Introduction. A variety of brain regions have been implicated in interval timing over the scale of seconds to minutes, including the striatum (see Buhusi and Meck 2005 for a review) and medial prefrontal cortex (mPFC) (Mangels et al. 1998; Onoe et al. 2001; Kim et al. 2009).For instance, Kim et al. (2013) recently showed that the ensemble state in …
The ratio between the mean firing rate of all high firing rate pixels and the mean of all low firing rate pixels was then used as a quantification of the contrast. Note, the percentile of the maximum that we used as the threshold was chosen to loosely correspond to a 1 SD radius on an idealized Gaussian distribution of spikes in a field.
With aging comes a myriad of different disorders, and cognitive decline is one of them. Studies have consistently shown a decline amongst aged subjects in their ability to acquire and maintain temporal associative memory. Defined as the memory of the association between two objects that are separated in time, temporal associative …
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Activity in the cortex is ongoing even in the absence of sensory input or discernible movements and is thought to be linked to the topology of the underlying cortical circuitry [[1][1]]. However, the connectivity and its functional role in the generation of spatio-temporal firing patterns and cortical computations are still unknown.
Computational models of cortical activity can provide insight into the mechanisms of higher-order processing in the human brain including planning, perception and the control of movement. Activity in the cortex is ongoing even in the absence of sensory input or discernable movements and is thought to be linked to the topology of …
A subset of pyramidal neurons in layer 5 of the mammalian neocortex can fire action potentials in brief, high-frequency bursts while others fire spikes at regularly spaced intervals. Here we show that individual layer 5 pyramidal neurons in acute slices from mouse primary motor cortex can adopt both regular and burst spiking patterns. …
The superficial layers of the entorhinal cortex (EC) provide the majority of the neocortical input to the hippocampus, and the deep layers of the EC receive the majority of neocortically bound hippocampal outputs. To characterize information transmission through the hippocampal and EC circuitry, we recorded simultaneously from neurons in the …
Abstract. Functional magnetic resonance imaging (fMRI) is an important tool for investigating human brain function, but the relationship between the hemodynamically …
The estimated location information from both streams is forwarded to a model for grid cell firing in the entorhinal cortex. For this example, we used the oscillatory interference model for simplicity, but similar effects could be obtained with most other types of grid cell models such as an attractor model of grid cells . We ...
What Is the Model. The medial entorhinal cortex (MEC) is a critical brain structure for spatial navigation and memory (Steffenach et al. 2005).Following the discovery of grid cells, it has become a focus of considerable experimental and theoretical attention as a model circuit for investigating neural mechanisms of cognition (Moser and Moser 2013). ...
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