Neural ensemble coding and statistical periodicity: Speculations on
... respectively, the values of x at times t and t+ 1. This map is referred to as the tent map because of its graphical appearance [98]. The variable x could be taken to represent, for example, the instantaneous neural firing rate or the inter-spike interval. Models of the nervous system in which time i ...
... respectively, the values of x at times t and t+ 1. This map is referred to as the tent map because of its graphical appearance [98]. The variable x could be taken to represent, for example, the instantaneous neural firing rate or the inter-spike interval. Models of the nervous system in which time i ...
Theory of Mind: A Neural Prediction Problem
... coding framework developed for cortical visual processing and by focusing on theory of mind, and specifically the attribution of internal states like goals, beliefs, and personality traits. This proposal is of course too general, and leaves many aspects of the model unspecified (some of which we add ...
... coding framework developed for cortical visual processing and by focusing on theory of mind, and specifically the attribution of internal states like goals, beliefs, and personality traits. This proposal is of course too general, and leaves many aspects of the model unspecified (some of which we add ...
Neural Coding and Auditory Perception
... 1.1.3 Effect of reverberation on coding of envelope modulations Speech reception depends critically on temporal modulations in the amplitude envelope of the speech signal. Reverberation encountered in everyday environments can substantially attenuate these modulations [10]. To assess the effect of r ...
... 1.1.3 Effect of reverberation on coding of envelope modulations Speech reception depends critically on temporal modulations in the amplitude envelope of the speech signal. Reverberation encountered in everyday environments can substantially attenuate these modulations [10]. To assess the effect of r ...
Neural Cognitive Modelling: A Biologically Constrained Spiking
... connected neurons. This post-synaptic current decays exponentially over time at a rate τ that depends on the neurotransmitter and receptors involved (ranging from two to hundreds of milliseconds). The various parameters of the LIF model (refractory period, membrane resistance, background current, po ...
... connected neurons. This post-synaptic current decays exponentially over time at a rate τ that depends on the neurotransmitter and receptors involved (ranging from two to hundreds of milliseconds). The various parameters of the LIF model (refractory period, membrane resistance, background current, po ...
Slide 1 - Elsevier Store
... toward the receptive field increased, and that for saccades away decreased as function of local fractional income, resulting in more reliable spatial selectivity (difference between the two saccade directions) with increasing reward probability. (B) LIP neurons are modulated by limb motor planning. ...
... toward the receptive field increased, and that for saccades away decreased as function of local fractional income, resulting in more reliable spatial selectivity (difference between the two saccade directions) with increasing reward probability. (B) LIP neurons are modulated by limb motor planning. ...
Reward system - Basic Knowledge 101
... 2 Anatomy of the reward system of likeliness toward a reward, which is called the hedonic impact. This is changed by how hard the reward is The brain structures which compose the reward system worked for. Experimenter Berridge modified testing a are primarily contained within the cortico–basal gangli ...
... 2 Anatomy of the reward system of likeliness toward a reward, which is called the hedonic impact. This is changed by how hard the reward is The brain structures which compose the reward system worked for. Experimenter Berridge modified testing a are primarily contained within the cortico–basal gangli ...
Preparation for the Dissertation report
... Figure 1.2: Artificial neuron is much more dependant on the severity of the lesion than on its exact location. He concluded that the brain is highly redundant, since, under deprivation of a sensory capability, a function that would usually be associated to the region of the lesion can still be perfo ...
... Figure 1.2: Artificial neuron is much more dependant on the severity of the lesion than on its exact location. He concluded that the brain is highly redundant, since, under deprivation of a sensory capability, a function that would usually be associated to the region of the lesion can still be perfo ...
Where is Pain Percieved?
... Pain is an inescapable sensation that every human being has experienced at least once in their lifetimes. The sensation of pain has two ways of being graded on its severity. The first is the objective intensity of pain, and the second is the subjective pain that the subject feels. Pain is one of the ...
... Pain is an inescapable sensation that every human being has experienced at least once in their lifetimes. The sensation of pain has two ways of being graded on its severity. The first is the objective intensity of pain, and the second is the subjective pain that the subject feels. Pain is one of the ...
Lexical Plasticity in Early Bilinguals Does Not Alter Phoneme
... interconnected and each represents one or more phonemes. The weights of certain connections between pools are the parameters of these models, whose values will determine the behavior of each model. The two models differ in terms of which of all possible interpool connection weights are considered pa ...
... interconnected and each represents one or more phonemes. The weights of certain connections between pools are the parameters of these models, whose values will determine the behavior of each model. The two models differ in terms of which of all possible interpool connection weights are considered pa ...
PDF file
... - temporal context is recursively “folded” into the spatial area like a finite automaton (FA) so that current motor state (response pattern) represents all the temporal context attended at the current time and they are all treated equivalent. Furthermore, all future processing is based such an equiv ...
... - temporal context is recursively “folded” into the spatial area like a finite automaton (FA) so that current motor state (response pattern) represents all the temporal context attended at the current time and they are all treated equivalent. Furthermore, all future processing is based such an equiv ...
The Preoptic Nucleus in Fishes: A Comparative Discussion of
... gonadotropin as the particular pituitary factor involved in the afferent stimulus system. However, where and how gonadotropin acts is an open question. Of course stimuli other than those indicated above also impinge on this circuit, including such factors as the presence or absence of a mate and env ...
... gonadotropin as the particular pituitary factor involved in the afferent stimulus system. However, where and how gonadotropin acts is an open question. Of course stimuli other than those indicated above also impinge on this circuit, including such factors as the presence or absence of a mate and env ...
State-dependent computations - Frankfurt Institute for Advanced
... All sensory stimuli generate spatiotemporal patterns of action potentials (spikes) that are conveyed to the CNS by sensory afferents. A fundamental goal of neuroscience is to understand how neural networks extract information from both the spatial and the temporal structure of these complex spike pa ...
... All sensory stimuli generate spatiotemporal patterns of action potentials (spikes) that are conveyed to the CNS by sensory afferents. A fundamental goal of neuroscience is to understand how neural networks extract information from both the spatial and the temporal structure of these complex spike pa ...
The evolution of nervous system centralization
... Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany It is yet unknown when and in what form the central nervous system in Bilateria first came into place and how it further evolved in the different bilaterian phyla. To find out, a series of recent molecular s ...
... Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany It is yet unknown when and in what form the central nervous system in Bilateria first came into place and how it further evolved in the different bilaterian phyla. To find out, a series of recent molecular s ...
Sensory Motor Approaches with People with Mental Illness Week 5
... – The repeated use of nerve pathways in a sensorimotor function creates a neural memory or map of that function • The brain can recreate the movement at other times ...
... – The repeated use of nerve pathways in a sensorimotor function creates a neural memory or map of that function • The brain can recreate the movement at other times ...
Predictability Modulates Human Brain Response to Reward
... variety of applications, including complex learning tasks such as backgammon (Sutton, 1988; Tesauro and Sejnowski, 1989), as well as successf ully predicting the activity of dopamine neurons in numerous conditioning paradigms (Houk et al., 1995; Montague et al., 1995) and motor sequencing tasks (Ber ...
... variety of applications, including complex learning tasks such as backgammon (Sutton, 1988; Tesauro and Sejnowski, 1989), as well as successf ully predicting the activity of dopamine neurons in numerous conditioning paradigms (Houk et al., 1995; Montague et al., 1995) and motor sequencing tasks (Ber ...
all publications as Word document
... Fontana, A, Soltoggio, A, Wrobel, B (2014) POET: an evo-devo method to optimize the weights of a large artificial neural networks. In Proceedings of the Fourteenth International Conference on the Synthesis and Simulation of Living Systems (ALIFE XIV). Cambridge, MA: MIT Press, 2014, New York, USA, ...
... Fontana, A, Soltoggio, A, Wrobel, B (2014) POET: an evo-devo method to optimize the weights of a large artificial neural networks. In Proceedings of the Fourteenth International Conference on the Synthesis and Simulation of Living Systems (ALIFE XIV). Cambridge, MA: MIT Press, 2014, New York, USA, ...
Neural Prostheses - Gert Cauwenberghs
... Concept of a retinal prosthesis that converts light to an electrical signal with an image acquisition and processing system. The information is transmitted to an implant positioned somewhere in the eye. The implant receives the signal and produces an artificial stimulus signal at the retina. The sti ...
... Concept of a retinal prosthesis that converts light to an electrical signal with an image acquisition and processing system. The information is transmitted to an implant positioned somewhere in the eye. The implant receives the signal and produces an artificial stimulus signal at the retina. The sti ...
Here - Statistical Analysis of Neuronal Data
... Many studies have attempted to examine the rhythmic modulation of the firing of individual neurons from extracellular recordings. In the rodent hippocampus, neurons are known to have a strong relationship to theta rhythm (6-12 Hz) oscillations in the local field potential and to be intrinsically rhy ...
... Many studies have attempted to examine the rhythmic modulation of the firing of individual neurons from extracellular recordings. In the rodent hippocampus, neurons are known to have a strong relationship to theta rhythm (6-12 Hz) oscillations in the local field potential and to be intrinsically rhy ...
Neuronal oscillations and brain wave dynamics in a LIF model
... brain region responsible for the symptoms. When they start to put current on the electrodes, we can see how his trembling hand instantly relaxes. It’s astounding that technology has come this far. But what strikes me the most, is what the neurologist in the studio tells us about the procedure: they ...
... brain region responsible for the symptoms. When they start to put current on the electrodes, we can see how his trembling hand instantly relaxes. It’s astounding that technology has come this far. But what strikes me the most, is what the neurologist in the studio tells us about the procedure: they ...
Neural Coding and Auditory Perception
... processing is bypassed in cochlear implants, we hypothesized that the normal correlation between best ITD and tuning width would be disrupted, and with it the normal alignment of rateITD curves near the midline which leads to fine acuity. To test this hypothesis, we modified our IC population model ...
... processing is bypassed in cochlear implants, we hypothesized that the normal correlation between best ITD and tuning width would be disrupted, and with it the normal alignment of rateITD curves near the midline which leads to fine acuity. To test this hypothesis, we modified our IC population model ...
SfN 2010 - Albion College
... and North America; its length can approach 25 cm. However, Lumbricus terrestris is not easy to maintain in a laboratory environment; it lives naturally in a permanent burrow that can be as deep as 1 or 2 m. Even if the proper habitat is created in the laboratory, retrieving the worm for study would ...
... and North America; its length can approach 25 cm. However, Lumbricus terrestris is not easy to maintain in a laboratory environment; it lives naturally in a permanent burrow that can be as deep as 1 or 2 m. Even if the proper habitat is created in the laboratory, retrieving the worm for study would ...
Chapter 7 The Nervous System
... H. Age-related changes 11. Reduced dendrites and dendritic spines 12. Intracellular neuronal changes a. Decreased Nissl substance (ribosomes) b. In the hippocampus, particularly: i. ...
... H. Age-related changes 11. Reduced dendrites and dendritic spines 12. Intracellular neuronal changes a. Decreased Nissl substance (ribosomes) b. In the hippocampus, particularly: i. ...
Neuroethology of reward and decision making
... the impact of expected value on sensory–motor processing in the lateral intraparietal (LIP) area, a region of the brain previously linked to visual attention and motor preparation. In that study, monkeys were cued to shift gaze from a central light to one of two peripheral lights to receive a fruit ...
... the impact of expected value on sensory–motor processing in the lateral intraparietal (LIP) area, a region of the brain previously linked to visual attention and motor preparation. In that study, monkeys were cued to shift gaze from a central light to one of two peripheral lights to receive a fruit ...
Chapter 2 Intrinsic Dynamics of an Excitatory
... connection to the jth neuron. d, and 0, representthe external stimulus and threshold respectively,at the nth instant. Considering the detailed biology of a neuron, there are two transforms occurring at the threshold element. At the input end, the impulse frequency coded information is transformed in ...
... connection to the jth neuron. d, and 0, representthe external stimulus and threshold respectively,at the nth instant. Considering the detailed biology of a neuron, there are two transforms occurring at the threshold element. At the input end, the impulse frequency coded information is transformed in ...
Neuroethology
Neuroethology is the evolutionary and comparative approach to the study of animal behavior and its underlying mechanistic control by the nervous system. This interdisciplinary branch of behavioral neuroscience endeavors to understand how the central nervous system translates biologically relevant stimuli into natural behavior. For example, many bats are capable of echolocation which is used for prey capture and navigation. The auditory system of bats is often cited as an example for how acoustic properties of sounds can be converted into a sensory map of behaviorally relevant features of sounds. Neuroethologists hope to uncover general principles of the nervous system from the study of animals with exaggerated or specialized behaviors.As its name implies, neuroethology is a multidisciplinary field composed of neurobiology (the study of the nervous system) and ethology (the study of behavior in natural conditions). A central theme of the field of neuroethology, delineating it from other branches of neuroscience, is this focus on natural behavior. Natural behaviors may be thought of as those behaviors generated through means of natural selection (i.e. finding mates, navigation, locomotion, predator avoidance) rather than behaviors in disease states, or behavioral tasks that are particular to the laboratory.