Visual Motion Perception using Critical Branching Neural Computation
... that are continually in flux, and in this sense network dynamics cannot be characterized by simple point or limit cycle attractors. This limits the extent to which attractorbased neural network models, common in cognitive science (e.g. connectionist recurrent networks), can relate the brain’s spikin ...
... that are continually in flux, and in this sense network dynamics cannot be characterized by simple point or limit cycle attractors. This limits the extent to which attractorbased neural network models, common in cognitive science (e.g. connectionist recurrent networks), can relate the brain’s spikin ...
Identification of Mechanoafferent Neurons in Terrestrial Snail
... examination of 263 PlVL cells in 52 preparations. The PlVL neurons were electrically silent, showing no spontaneous activity or fast synaptic potentials both in isolated brain and reduced CNS-foot preparations. The average membrane potential of the PlVL cells was 57.5 ⫾ 3.1 mV. A gentle mechanical t ...
... examination of 263 PlVL cells in 52 preparations. The PlVL neurons were electrically silent, showing no spontaneous activity or fast synaptic potentials both in isolated brain and reduced CNS-foot preparations. The average membrane potential of the PlVL cells was 57.5 ⫾ 3.1 mV. A gentle mechanical t ...
`Genotypes` for neural networks - laral
... are responsible for a single function, e.g. vision, tend to be located in the same part of the brain. Developmentally, the probability that two neurons will end up as being connected depends on the physical location of the two neurons. (For an account of development that emphasizes the role of spati ...
... are responsible for a single function, e.g. vision, tend to be located in the same part of the brain. Developmentally, the probability that two neurons will end up as being connected depends on the physical location of the two neurons. (For an account of development that emphasizes the role of spati ...
NNIntro
... persistently takes part in firing it, some growth process or metabolic change takes place in one or both cells such that A’s efficiency, as one of the cells firing B, is increased.” ...
... persistently takes part in firing it, some growth process or metabolic change takes place in one or both cells such that A’s efficiency, as one of the cells firing B, is increased.” ...
Chapter 10
... Neuron Structure cont. • Note terminations of axon branch = axonal terminals (synaptic knobs) • Axons in PNS: • Large axons are surrounded by a myelin sheath produced by many layers of Schwann Cells (neuroglial cell) – "myelinated nerve fiber" ...
... Neuron Structure cont. • Note terminations of axon branch = axonal terminals (synaptic knobs) • Axons in PNS: • Large axons are surrounded by a myelin sheath produced by many layers of Schwann Cells (neuroglial cell) – "myelinated nerve fiber" ...
Canonical Neural Models1
... (saddle) approaches the rest state (node), they coalesce and annihilate each other leaving only limit cycle attractor. The oscillation on the attractor has two time scales: slow transition through the “ghost” of the saddle-node bifurcation and fast rotation along the rest of the limit cycle. • Class ...
... (saddle) approaches the rest state (node), they coalesce and annihilate each other leaving only limit cycle attractor. The oscillation on the attractor has two time scales: slow transition through the “ghost” of the saddle-node bifurcation and fast rotation along the rest of the limit cycle. • Class ...
Bio 211 Lecture 18
... • absolute - time when threshold stimulus does not start another action potential (Na+ channels inactivated) • relative – time when stronger threshold stimulus can start another action potential (Na+ channels restored, K+ channels begin ...
... • absolute - time when threshold stimulus does not start another action potential (Na+ channels inactivated) • relative – time when stronger threshold stimulus can start another action potential (Na+ channels restored, K+ channels begin ...
PRINCIPLES OF NEUROBIOLOGY CHAPTER 6
... stimulus, then that pattern of action potentials is considered ‘signal’: it contains information about the presence of a stimulus. On the other hand, if the firing pattern of a neuron is not dependent on the presence of a stimulus, then that neuron’s firing contains no information about the presenc ...
... stimulus, then that pattern of action potentials is considered ‘signal’: it contains information about the presence of a stimulus. On the other hand, if the firing pattern of a neuron is not dependent on the presence of a stimulus, then that neuron’s firing contains no information about the presenc ...
Nervous Systems
... • Organisms have different types of nervous systems based on their complexities • The simplest organisms will have a web-like arrangement of nerves throughout the body the act as a nerve net • These organisms are able to react to stimuli, but do not show any higher activity • Example: Hydra • A litt ...
... • Organisms have different types of nervous systems based on their complexities • The simplest organisms will have a web-like arrangement of nerves throughout the body the act as a nerve net • These organisms are able to react to stimuli, but do not show any higher activity • Example: Hydra • A litt ...
Compete to Compute
... a network probabilistically for each training example during training, meaning that droppped neurons do not participate in forward/backward propagation with a given probability. Consider, hypothetically, training an LWTA network with blocks of size two, selecting the winner with a probability of 0.5 ...
... a network probabilistically for each training example during training, meaning that droppped neurons do not participate in forward/backward propagation with a given probability. Consider, hypothetically, training an LWTA network with blocks of size two, selecting the winner with a probability of 0.5 ...
Noradrenergic Modulation of Activity in a Vocal Control Nucleus In
... fiber tract were delivered until a spike was consistently evoked from an RA cell (recorded extracellularly) within 5 ms; across cells, the average latency between stimulus pulse onset and the spike (measured at the maximum negative-going deflection) was 3.3 ⫾ 0.8 (SD) ms. The minimum stimulus intens ...
... fiber tract were delivered until a spike was consistently evoked from an RA cell (recorded extracellularly) within 5 ms; across cells, the average latency between stimulus pulse onset and the spike (measured at the maximum negative-going deflection) was 3.3 ⫾ 0.8 (SD) ms. The minimum stimulus intens ...
Two dimensional synaptically generated traveling waves in a theta
... Traveling waves have received much attention lately due to recent experimental and theoretical work [1,5,7,8]. Previous work explored the one-dimensional aspect of the problem as the "rst step toward a better understanding of the underlying neural circuitry. Traveling activity waves are encountered ...
... Traveling waves have received much attention lately due to recent experimental and theoretical work [1,5,7,8]. Previous work explored the one-dimensional aspect of the problem as the "rst step toward a better understanding of the underlying neural circuitry. Traveling activity waves are encountered ...
Dynamic Stochastic Synapses as Computational Units
... of changes in specific parameters of a biological synapse. After the presentation of this model in section 2, we analyze the computational consequences of this model in section 3. We focus here on computations on short spike trains, which have not been addressed previously in the literature. 2 A Mod ...
... of changes in specific parameters of a biological synapse. After the presentation of this model in section 2, we analyze the computational consequences of this model in section 3. We focus here on computations on short spike trains, which have not been addressed previously in the literature. 2 A Mod ...
Induction of c-fos Expression in Hypothalamic Magnocellular
... is continuous in the rat, oxytocin neurons show short highfrequency bursts of activity followed by silent periods (Poulain and Wakerley, 1982) and therefore there is very little overall increasein oxytocin neuronal firing during lactation. Thus, either the pattern of activity during lactation is not ...
... is continuous in the rat, oxytocin neurons show short highfrequency bursts of activity followed by silent periods (Poulain and Wakerley, 1982) and therefore there is very little overall increasein oxytocin neuronal firing during lactation. Thus, either the pattern of activity during lactation is not ...
Dissecting appetite
... of neurons in this part of the hypothalamus — those that express the proteins TRH and PACAP — would activate the AgRP neurons and drive well-fed mice to eat voraciously. Conversely, if these neurons were turned off, starving mice would barely eat. From his experiments with AgRP, NPY and GABA, Palmit ...
... of neurons in this part of the hypothalamus — those that express the proteins TRH and PACAP — would activate the AgRP neurons and drive well-fed mice to eat voraciously. Conversely, if these neurons were turned off, starving mice would barely eat. From his experiments with AgRP, NPY and GABA, Palmit ...
Synchronized Activities among Retinal Ganglion Cells in Response
... checker-board flickering. The results showed that nearby RGCs tended to fire synchronously much more frequently than expected by chance, in response to both stimuli. Under our experimental conditions, synchronous groups could contain three or more cells in response to natural movie; but activities w ...
... checker-board flickering. The results showed that nearby RGCs tended to fire synchronously much more frequently than expected by chance, in response to both stimuli. Under our experimental conditions, synchronous groups could contain three or more cells in response to natural movie; but activities w ...
Touch lab
... - even with 5 s delay between touch and localisation movement? (http://firmin.lyon.inserm.fr/534/534YR-Gros.pdf see p. 163) 3. Measure localisation errors on the arm and abdomen in people with/without high levels of body image concern (Think carefully: needs 40 subjects to be worth it!) ...
... - even with 5 s delay between touch and localisation movement? (http://firmin.lyon.inserm.fr/534/534YR-Gros.pdf see p. 163) 3. Measure localisation errors on the arm and abdomen in people with/without high levels of body image concern (Think carefully: needs 40 subjects to be worth it!) ...
The CEMI Field Theory
... 1986) proposed that the neurons representing features of an object are transiently coupled through synchronous firing. More recently, Pascal Fries formulated the ‘communication through coherence’ (CTC) hypothesis whereby neural communication between neurons was proposed to depend on their degree of ...
... 1986) proposed that the neurons representing features of an object are transiently coupled through synchronous firing. More recently, Pascal Fries formulated the ‘communication through coherence’ (CTC) hypothesis whereby neural communication between neurons was proposed to depend on their degree of ...
Tom`s JSNC2000 paper
... One of the goals of the ANIMAT project is to study information processing in vitro by providing a dissociated culture of neurons a body with which to behave, and a world in which to behave in. We have succeeded in our first major goal: to read activity from the culture in realtime, and to respond wi ...
... One of the goals of the ANIMAT project is to study information processing in vitro by providing a dissociated culture of neurons a body with which to behave, and a world in which to behave in. We have succeeded in our first major goal: to read activity from the culture in realtime, and to respond wi ...
Adams et al
... tendency to abandon the current behavioral strategy for another potentially more profitable one, might also be mediated in humans through genetic influences on catecholaminergic neuromodulatory systems [15]. In a remarkable illustration of the idea that similar decision-making problems may be solved ...
... tendency to abandon the current behavioral strategy for another potentially more profitable one, might also be mediated in humans through genetic influences on catecholaminergic neuromodulatory systems [15]. In a remarkable illustration of the idea that similar decision-making problems may be solved ...