Bump attractor
WebHere, we show that a continuous bump attractor network can integrate a circular feature, such as stimulus direction, nearly optimally. As required by optimal integration, the population activity of the network unfolds on a two-dimensional manifold, in which the position of the network’s activity bump tracks the stimulus average, and ... WebMar 15, 2024 · The bump location thus provides 56 a substrate for encoding a continuous variable such as an orientation or a spatial location. Moreover, 57 while intrinsically the bump position is stable, external inputs can drive the bump to move. Due to these 58 features, bump attractor networks have been proposed as the neural mechanism …
Bump attractor
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Webful model has been the “bump attractor,” in which a continuous attractor emerges through an underlying symmetry in the network connectivity matrix. This model, however, cannot account for data in which the per-sistent firing of neurons is a monotonic—rather than a bell-shaped— ... WebJul 27, 2024 · Making the beverage temperature subnets bump attractors enables persistent activity. However, with large input ranges, there are two bumps of activity at the ends of the range. For example, in the Hot Coffee case, neurons 70 ∘ to 74 ∘ and 95 ∘ to 99 ∘ fire persistently. This is the problem that was solved in Section 4.
Webnoun. something that bulges out or is protuberant or projects from its surroundings. synonyms: bulge, excrescence, extrusion, gibbosity, gibbousness, hump, jut, … WebSynonyms for BUMP: swelling, lump, bruise, nodule, node, hump, knot, tumor; Antonyms of BUMP: miss, skirt
WebWhat I observe in my simulations are 'bump' attractors that appear, disappear, and may wander around. Here is a screen shot from a simulation: Dark blue dots represent excitatory neurons' spikes (fading into white to leave a trace), and dark red triangles representing inhibitory neurons' spikes. WebBump attractors are wandering localized patterns observed in in vivo experiments of spatially extended neurobiological networks. They are important for the brain's …
WebBump attractor networks have played a key role in modeling and analyzing the neural processes involved in path integration. In such networks, self-motion inputs and asymmetries in the network translate an activity bump over the attractor manifold, updating the animal's perceived position in space.
Webto come more or less violently in contact with; collide with; strike: His car bumped a truck. to cause to strike or collide: He bumped the car against a tree. verb (used without object) to … outsiders feestWebPath integration is a navigational strategy through which an animal remains oriented even in the absence of stable landmarks. Bump attractor networks have played a key role in modeling and analyzing the neural processes involved in path integration. In such networks, self-motion inputs and asymmetries in the network translate an activity bump over the … outsiders fight sceneWebBump attractors are localized activity patterns that can self-sustain after stimulus presentation, and they are regarded as the neural substrate for a host of perceptual and … outsiders farm \u0026 sanctuaryWebJan 26, 2024 · A common hypothesis is that the information is maintained in a bump attractor’s state. We test the bump attractor hypothesis and find that its predictions are inconsistent with the path integration behaviour of ants, thus highlighting the need for alternative models of path integration memory. raion style inferno armor controlWebbump attractor (Compte et al., 2000). We examine the effects of interareal architecture on the dynamics of bump attractors in stochastic neural fields. Lateral inhibitory synaptic structure in each area sustains stationary bumps in the absence of noise. Introducing noise causes bumps in individual areas to wander as a Brownian walk. raion style: inferno armour control showcaseWebJul 27, 2024 · While bump attractors are a common and long standing model, these large valued inputs force a reduction in the number of inhibitory connections so that the bump … outsiders farrell wineWebMar 16, 2024 · Here, we show that the continuous ring attractor network can integrate a stimulus feature such as orientation and track the stimulus average in the phase of its activity bump. We reduced the network dynamics of the ring model to a two-dimensional equation for the amplitude and the phase of the bump. Interestingly, these reduced … raion style inferno spirit blade