D. O. Hebb. The organisation of behavior. New York, Wiley, 1949.  Home/Search   Document Not in Database   Summary   Related Articles   Check

.... from rates of change of average excitatory and inhibitory neuronal firings, and then proceeds to search for collective behavior, limit cycles, and oscillatory behavior [81 86] Mechanisms are sought to explain varied phenomena such as hysteresis in perception [84] perception and learning [87,88], and ontogenesis of columnar formation [88,89] Comparisons with applications of these techniques to those used in other physical systems [1] illustrates that the pioneering application of these appropriate formalisms to the neocortical system still has much to offer. Much inspiration for these ....

....by indices E and I two chemically and anatomically independent firing fields; G denotes either field. For this study we do not consider dynamic synaptic modifications, which typically take place as a result of one to many epochs of macroscopic temporal activity effecting such plastic changes [87]. Therefore, take as independent of spacetime, v jk , jk v , V j , A jk , B jk V , A G , B G = a G . 42) The greater importance of I synapses (circuitry, proximity to soma) increases effective inhibitory v jk and a jk . Take v jk A jk G A E = v I 0, ....

D.O. Hebb, The Organisation of Behavior (Wiley, New York, NY, 1949).

....around these minima) So, the total frustration acts for this discrete step network like an energy or Lyapunov function that the system tries to minimize, and here physicists feel at home. 2 Network modelers, though, want something more: learning. It happens that simple Hebbian learning (Hebb, 1949) has remarkable properties in a Hopfield net. Heb bian learning consists of presenting a target state and adjusting the connections depend ing on that state; the update rule is: where K is a positive constant 3 reflecting the importance given to that particular target state. In an initially ....

Hebb, D. (1949). The organisation of behavior. NY, NY: Wiley.

....was not until 6 years after the McCulloch Pitts revelations that the psychologist Donald Hebb, made James learning proposal concrete. Although he cites neither James nor McCulloch and Pitts, Hebb took a step beyond them in attempting to causally relate memory and perception to the physical world (Hebb, 1949). His idea was that the representations of objects may be considered to be states (or patterns) of neural activity in the brain. He proposed that, each time a neural pathway is used, there is a metabolic change in the synaptic connection between the neurons in the path that facilitates subsequent ....

Hebb, D. (1949). The organisation of behavior. Wiley, New York.

....to the organism and not as external cues. We are, in fact, talking about representations of stimuli. This view of learning is similar to the early associationistic school that considered associations as links among ideas. Hebb s cell assembly theory is a more sophisticated variation on this theme (Hebb 1949). The above list is by no means exhaustive. I have only touched on some of the most important ideas about what is learned by an animal. Numerous attempts have been made to explain each of the above learning types by means of the other but so far there is no consensus in the area. The view I am ....

Hebb, D. O., (1949), The organisation of behavior , New York: John Wiley and Sons.

....the connections between neurons. Soon the first real proposal for neural network learning came from William James (1892) who proposed that when two processes in the brain are active at the same time, they tend to make permanent connections. This is often referred to as Hebbian learning. However, Hebb (1949) did not set out his learning rule until more than 50 years after James and six years after the now famous McCulloch and Pitts (1943) paper, A logical calculus of the ideas immanent in nervous activity , which initiated the development of a formal computational approach to finding a physical basis ....

....brain and this was particularly intense between cognitivists and connectionists, e.g. Fodor and Pylyshyn (1988) vs. Smolensky (1987) Although Hebb cited neither James nor McCulloch and Pitts, he took a step beyond them in attempting to causally relate memory and perception to the physical world [Hebb, 1949]. He proposed that the representations of objects may be considered to be states (or patterns) of neural activity in the brain. When a neural pathway is used, a metabolic change in the synaptic connections facilitates subsequent signal transmission. In this way, groups of neurons, from potentially ....

Hebb, D. (1949). The organisation of behavior. Wiley, New York.

....of the sigma function, sgn(0) 1. The term I is the external input vector, and can be used to bias the network with a persistent guess of the image to be retrieved ( 42] The Hopfield prescription for the setting of the network s weights w ij are derived from the biologically based Hebbian ([17]) learning process. Namely as a sum over the = 1 Delta Delta Delta P patterns the network is asked to store: w ij = 1 N P X =1 i j (13) which is of course the outer product of each of these patterns. Since this weight matrix is the square of the number of nodes (and the ....

Hebb, D.O., "The Organisation of Behavior" New York: Wiley, 1949.

....to the ongoing dynamics of the musical stimuli. In order to describe the complex dynamics of music in the human brain (and music seems to be one of the rare exclusively human cognitive skills) we adhere to a Hebbian theoretical framework of the neuronal basis of music perception and production [Hebb 1949, Pulverm ller et al. 1994] Each stage of music processing, beginning with the perceptual feature analysis of clef, key signature, metrum, tempo etc. continuing to the representation of pitch, duration, rhythm in memory and anticipation, planning and understanding the underlying musical structure ....

....for another mental activity. Assemblies are formed through contiguity: simultaneous arrival of two impulses or cascades of impulses at plastic synaptic spines strengthens their connection, and at the next occasion the input of only one or a few synapses are able to fire the postsynaptic unit [Hebb, 1949]. Since many synchronously excitatory afferents have to converge on the cortical cell before it s firing, excitation threshold is reduced in a particular assembly only for that neural activity matching the specific assembly. Cell assemblies ignite if only part of its neurons are excited. Each cell ....

Hebb, D. [1949] 'The Organisation of Behavior', Wiley, N.Y.

....S S S S S S S S ff i fi j = P m i=1 a i;j ff i a i;j Figure 1: realization of fi = A T ff on a network Fig. 3 shows one cell of an array realizing A = fffi T . These contributions can be called Hebbian, after Hebb s famous learning law, originally formulated for biological neural networks [12]. An example of a law using contributions of type I only, is A = xx T A Gamma AA T xx T A = x(A T x) T Gamma (AA T x) A T x) T : 3) This is a continuous time version of Oja s Subspace Algorithm (SA) 11] The input signal x is supplied to the first layer, and multiplied by A ....

D.O. Hebb, "The organisation of behavior", Wiley, New York, 1949.

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D. O. Hebb. The organisation of behavior. New York, Wiley, 1949.

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Hebb, D. (1949). The organisation of behavior. NY, NY: Wiley.

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Hebb, D. O. The Organisation of Behavior. John Wiley and Sons, New York, 1949.

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