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AMPA Receptor Calcium Permeability, GluR2
AMPA Receptor Calcium Permeability, GluR2

... other AMPA receptor subunits (Hume et al., 1991; Burnashev et al., 1992). This critical arginine residue is created at the premRNA stage by RNA editing (Sommer et al., 1991). The relative Ca 21 permeability of native AMPA receptors in neurons is inversely correlated with the relative abundance of ed ...
A Selection Model for Motion Processing in Area MT
A Selection Model for Motion Processing in Area MT

... present the detailed response properties of the units in these stages. Retmalprocessing. The 64 x 64 pixel input array is roughly equivalent to an array of photoreceptors that represents the intensity at each pixel location by one of 256 gray levels. A motion stimulus consists of a sequence of image ...
ACTIN CYTOSKELETON REGULATION IN NEURONAL
ACTIN CYTOSKELETON REGULATION IN NEURONAL

... Cytochalasin treatment coupled with high-resolution video microscopy of the giant Aplysia growth cones (Forscher & Smith 1988) provided insight into the function of the actin cytoskeleton in the inner workings of the growth cone. In filopodia and lamellipodia of these giant growth cones, there is a ...
Modulation of Neuronal Activity in the Monkey Putamen Associated
Modulation of Neuronal Activity in the Monkey Putamen Associated

... lowered below the surface of the dura, the microelectrode was passed inside the guide and was advanced using a manual hydraulic microdrive (MO95, Narishige, Tokyo, Japan). The signal from neuronal activity was amplified 5,000 times, filtered at 0.3–1.5 kHz, and converted to digital pulses through a ...
Pattern adaptation and cross-orientation interactions in the primary
Pattern adaptation and cross-orientation interactions in the primary

... orientations—the preferred orientation for a cell, and the orientation orthogonal to it. Because neurons in the primary visual cortex are sharply tuned for orientation, stimulation with orthogonal orientations excites two largely distinct populations of neurons. With intracellular recordings of the ...
The Neurons of the Medial Geniculate Body in the Mustached Bat
The Neurons of the Medial Geniculate Body in the Mustached Bat

... within the mustached bat’s medial geniculate complex (Olsen, 1986). This arrangement undoubtedly reflects and also transforms the systematic pattern of best frequency prevailing in hindbrain and midbrain auditory centers (Pollak and Casseday, 1989). While a fovea may conserve one stimulus dimension ...
Experience-dependent corticofugal adjustment
Experience-dependent corticofugal adjustment

... recorded with a tungsten-wire microelectrode ('7-mm tip diameter) at about 100-mm intervals along a dorsoventral electrode penetration. These recordings yielded a BF-depth curve in the control condition (i.e., the condition before the 30-min delivery of acoustic andyor electric stimuli). We then del ...
Auditory Neurons in the Dorsal Cortex of the Inferior Colliculus
Auditory Neurons in the Dorsal Cortex of the Inferior Colliculus

... the auditory nerve. The cochlear nucleus is subdivided into ventral and dorsal divisions (VCN and DCN, respectively). The ventral division can be further subdivided into the anterior ventral cochlear nucleus (AVCN), and the posterior ventral cochlear nucleus (PVCN). Each division of the CN receives ...
Neuronal morphology in the African elephant (Loxodonta africana
Neuronal morphology in the African elephant (Loxodonta africana

... Deep pyramidal neurons were qualitatively described according to nomenclature found in previous neuromorphological research (e.g., Ngowyang 1932; Ferrer et al. 1986a, b). Descriptions for each neuron used qualitative criteria, such as cortical location, size, dendritic field patterns, presence of sp ...
Predominance of Movement Speed Over Direction in Neuronal
Predominance of Movement Speed Over Direction in Neuronal

... vector. Recently, there is also increasing interest in the representation of movement parameters in neuronal population activity, such as reflected in the intracranial EEG (iEEG). We show that in iEEG, contrasting to what has been previously found on the single neuron level, speed predominates over v ...
Multiple Running Speed Signals in Medial Entorhinal Cortex
Multiple Running Speed Signals in Medial Entorhinal Cortex

... 3Present address: Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Montreal, QC H4H 1R3, Canada *Correspondence: [email protected] http://dx.doi.org/10.1016/j.neuron.2016.06.027 2Graduate ...
Intracellular Features Predicted by Extracellular
Intracellular Features Predicted by Extracellular

... these, 60 –100 neurons should generate spikes of sufficient amplitude to be detectable from the noise and to allow for their separation using current spatial clustering methods. This theoretical maximum is in contrast to the approximately six units that are usually detected per tetrode. From this, w ...
Central mechanisms of osmosensation and systemic osmoregulation
Central mechanisms of osmosensation and systemic osmoregulation

... information into electrical signals that can persist even during prolonged perturbations50. Studies involving electro­physiological recording (FIG. 4c,d), functional imaging (FIG. 4a,b) or the expression of activity-dependent immediate-early genes such as Fos91 have shown that many subsets of neuron ...
Noise and Coupling Affect Signal Detection and Bursting in a
Noise and Coupling Affect Signal Detection and Bursting in a

... demonstrating the presence or utility of AESR or CR in physiological neural systems is lacking. Although several different mathematical neural models have been used to investigate AESR and CR, even simultaneously (Lindner and Schimansky-Geier 1999, 2000), there has been little correlation of the eff ...
J Comp Neurol 2000 Lavenex - University of California, Berkeley
J Comp Neurol 2000 Lavenex - University of California, Berkeley

... but their reliance on spatial memory to locate receptive females has yet to be demonstrated. Caching activity and gray squirrels’ dependence on food caches also varies seasonally (Gurnell, 1987; Koprowski, 1994; Thompson and Thompson, 1980; Vander Wall, 1990). Gray squirrels scatter-hoard their wint ...
NIH Public Access
NIH Public Access

... Axon regeneration in the mature mammalian central nervous system (CNS) is extremely limited after injury. Consequently, functional deficits persist after spinal cord injury (SCI), traumatic brain injury, stroke, and related conditions that involve axonal disconnection. This situation differs from th ...
A computational model of action selection in the basal ganglia. I. A
A computational model of action selection in the basal ganglia. I. A

... central nervous system. The overall activity level of the neural representation of a given action may determine its salience or propensity to be selected for execution, as proposed by Koechlin and Burnod (1996). Rather than dealing directly with the neural codes for each action, we propose that the ...
Maruska & Tricas 2009b
Maruska & Tricas 2009b

... stimulation, and then used to generate interspike interval (ISI) histograms with 2 ms bins. A minimum of 500 spikes of resting activity were recorded prior to stimulation, with the exception of silent units. The coefficient of variation (CV), which is a dimensionless ratio of standard deviation to m ...
189084_189084 - espace@Curtin
189084_189084 - espace@Curtin

... A9, and A10 dopamine cell groups should be considered different from each other, and that there are notable differences in the neurons within the A9 cell group. These aspects have not been previously studied in mice in any detail. ...
Cilia development, morphogenesis, and
Cilia development, morphogenesis, and

... wide spectrum of behaviors. In the wild, C. elegans lives at the water-soil interface, and must be able to navigate a complex environmental milieu. For example, animals must chemotax to attractive food sources while avoiding toxic substances. C. elegans cilia are sensory and nonmotile, with varietie ...
(15 pages pdf)
(15 pages pdf)

... not cause simply a ‘‘shift-up’’ in the puff-response curve due to an increase in spontaneous locomotor activity but rather that the flies take longer to ‘‘calm down’’ following the repetitive startle stimulus. This enhanced reactivity to mechanical startle is also reflected in the elevated prepuff a ...
Total Wiring Length Minimization of C. elegans Neural
Total Wiring Length Minimization of C. elegans Neural

... Depending on the function they perform in the body of the worm, neurons can be divided into three groups: motor neurons, sensory neurons and interneurons. The cells from the first group project their axons on muscles of the C. elegans and therefore control the movement of the worm. Sensory neurons h ...
Microstructure of the neocortex: Comparative aspects
Microstructure of the neocortex: Comparative aspects

... humans and how does it differ from that of other species? It is clear that distinct cortical areas show important differences within both the same and different species, and this has led to some researchers emphasizing the similarities whereas others focus on the differences. In general, despite of ...
Reward and Aversion
Reward and Aversion

... identification of a desirable goal (McClure et al. 2003). The RPE hypothesis of DA provides a simple and beautiful account of how DA may be involved in the learning and action selection aspect of reward behavior. It stems from one of the most influential discoveries of systems neuroscience made by S ...
A Cortical Substrate for Memory
A Cortical Substrate for Memory

... before whisker trimming. Diamonds are data after trimming, solid lines are sigmoid fits. Memory trials are in orange, nonmemory trials in green. (E) Unilateral whisker pad anesthesia and paralysis (four rats) also has a minimal effect on performance. Open circles are data from lidocaine sessions. Co ...
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Biological neuron model

A biological neuron model (also known as spiking neuron model) is a mathematical description of the properties of nerve cells, or neurons, that is designed to accurately describe and predict biological processes. This is in contrast to the artificial neuron, which aims for computational effectiveness, although these goals sometimes overlap.
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