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Temporal Sequence Detection with Spiking Neurons: Towards
Temporal Sequence Detection with Spiking Neurons: Towards

... 1997; Panchev et al., 2002), but there is still an ongoing debate on which are the essential properties of the biological neurons necessary to be simulated in order to achieve the computational power of a real neural system. The work presented in this article extends the current modeling paradigms o ...
A Feedback Model of Visual Attention
A Feedback Model of Visual Attention

... The Reynolds and Desimone model, in common with others (e.g., Olshausen et al., 1993), uses top-down signals to multiplicatively modulate the synaptic strengths of inter-regional connections so that attended information can be selectively routed to higher cortical regions. Equivalent results can be ...
Do Computational Models Differ Systematically From Human Object
Do Computational Models Differ Systematically From Human Object

... 2.1 Perceived dissimilarity measurements in humans We collected a total of 26,675 perceived dissimilarity measurements from 2,801 objects across 269 human subjects. We measured perceived dissimilarities between isolated objects rather than natural scenes because the latter may produce variations in ...
reading for language.
reading for language.

... dominance, while those with left, bilateral or right hemisphere language representation do not differ significantly with respect to verbal fluency, linguistic processing or intelligence, as well as with regard to the homology of anatomical and functional organization of language networks in either h ...
(Full text - MSWord file 171K)
(Full text - MSWord file 171K)

... further suggest that there are two types of reward prediction errors: a signal representing error in the timing of reward prediction, which may be related to the TD model, and a signal coding for error in the type and amount of reward prediction, which may be related to the adaptive resonance networ ...
Nuclear receptor coactivators: Regulators of steroid action in brain
Nuclear receptor coactivators: Regulators of steroid action in brain

... It is thought that coactivators are modulators of cellular responsiveness to steroids. In support, SRC-1 knockout mice, while fertile, have decreased responsiveness in progestin target tissues (91) and partial resistance to thyroid hormone (92). It is important to note that in these mice SRC-2 is up ...
Paper by Daniel Romer (2010) "Adolescent Risk Taking,Impulsivity
Paper by Daniel Romer (2010) "Adolescent Risk Taking,Impulsivity

... At the same time that the adolescent is engaging in novel and risky activities, it is argued that the PFC has not yet matured to the point where risks can be adequately assessed and control over risk taking can be sufficiently exerted to avoid unhealthy outcomes. In particular, the PFC and its conne ...
Nervous System
Nervous System

... Receive information from all association areas Perform higher-level analytical functions Integration here accounts for critical thinking abilities Our ability to speak is governed by 2 processing centers • Wernicke’s area-dorsal part of left temporal lobe – Understanding of written and spoken words ...
Neural Network
Neural Network

... − It is useful in solving problems where the solution depends not just on the current inputs but on all previous inputs. ...
Nerve activates contraction
Nerve activates contraction

... •Bipolar neurons—one axon and one dendrite •Located in special sense organs such as nose and eye •Rare in adults ...
Down - 서울대 Biointelligence lab
Down - 서울대 Biointelligence lab

... different directions in a familiar maze. The dashed line represents the new head properties of the same neuron when the rodent is placed in the new unfamiliar maze. The new response properties will normally be similar to the previous one, that is, head direction cells try to maintain approximately t ...
Down
Down

... different directions in a familiar maze. The dashed line represents the new head properties of the same neuron when the rodent is placed in the new unfamiliar maze. The new response properties will normally be similar to the previous one, that is, head direction cells try to maintain approximately t ...
On the Role of the Pontine Brainstem in Vocal Pattern Generation: A
On the Role of the Pontine Brainstem in Vocal Pattern Generation: A

... avoid measuring the same unit at two consecutive positions, only the largest spike form recorded at a specific position was used for data analysis. For the identification of vocalizationcorrelated and auditory units, conventional perievent time histograms (PETHs) and peristimulus time histograms, re ...
Psychopharmacology
Psychopharmacology

... • Also note that in the previous slide the final destination for Aδ and C fibers differ – Aδ fibers project to thalamus and then to primary and ...
PhD Thesis - Laboratory of Cerebral Cortex Development
PhD Thesis - Laboratory of Cerebral Cortex Development

... The process leading the anterior neural plate to the specification of pallial and subpallial territories implies the determination and the specification of telencephalic identities along the R-C and D-V axis. At E7 the early R-C patterning of the anterior neural tissue (anterior neural induction) i ...
How is Epilepsy Diagnosed?
How is Epilepsy Diagnosed?

... The brain consists of more than 100 billion nerve cells. These all communicate with one another; some provoke others into sending further messages (excitation), while others tend to block them (inhibition). The proper working of the brain depends on a balance between these: too many nerve cells send ...
Maturation of Layer V Pyramidal Neurons in the Rat Prefrontal
Maturation of Layer V Pyramidal Neurons in the Rat Prefrontal

... working memory (Fuster and Alexander 1971; Kubota and Niki 1971; Wang 2001). As expected, dysfunction of the PFC has been implicated in several mental illnesses, particularly schizophrenia. Deficiency in the working memory process in the PFC has been associated with the symptoms and cognitive defici ...
Neuronal Correlates of Sensorimotor Association in Stimulus
Neuronal Correlates of Sensorimotor Association in Stimulus

... the overt response), it was found that in trials in which the stimulus was flanked by incompatible noise, both responses were initially activated, with the incompatible response eventually dropping out and the compatible one being left to be executed, with a delay. As far as we know, few studies hav ...
Dorsal spinal cord stimulation obtunds the capacity of intrathoracic
Dorsal spinal cord stimulation obtunds the capacity of intrathoracic

... optically isolated amplifier (Applied Microelectronics Institute, Halifax, NS, Canada). The amplified neuronal signals, together with the cardiovascular signals, were digitized (Cambridge Electronics Design, power 1401 data acquisition system) and analyzed using the Spike 2 software package (Cambrid ...
Modulation of Synaptic Transmission to Second
Modulation of Synaptic Transmission to Second

... The caudal nucleus tractus solitarius (cNTS), where peripheral chemoreceptor afferents and other visceral afferents make their first central synapses (Mifflin, 1992), has intense anatomical connections with central noradrenergic neural structures (Loewy, 1990). The cNTS also contains noradrenergic n ...
Spatial Representation and Navigation in a Bio
Spatial Representation and Navigation in a Bio

... In this section we focus on those models which were tested in navigational tasks in real environments using mobile robots. Readers interested in theoretical and simulation models as well as in models of different types of navigation are referred to reviews of Trullier et al. [19] and Franz and Mallot ...
article in press - Neurobiology of Vocal Communication
article in press - Neurobiology of Vocal Communication

... a number of other non-verbal emotional vocal utterances also are genetically determined [45]. Furthermore, almost all nonhuman mammalian vocalizations belong to this type [19]. The other type of vocal behavior is characterized by vocal patterns learned by imitation or invention. Human speech is one ...
Animal Communication, Second Edition Web Topics
Animal Communication, Second Edition Web Topics

... large, computer software must be used to construct the tree. PAUP, PHYLIP, MrBayes, BEAST, RAXML, and PHYLLAB are six commonly used packages that build trees using several of the methods mentioned below, and others are more specific to certain methods (for details see Hall 2004, and web resources a ...
Ocular Dominance in Human V1 Demonstrated by Functional
Ocular Dominance in Human V1 Demonstrated by Functional

... least three times higher than at the much more commonly available 1.5 T field strength (Gati et al. 1997). This increase is sufficiently large to attempt imaging of ocular dominance in human V1, where ODCs are Ç0.8–1 mm on a side for a column and 5–10 mm long in humans (Horton and HedleyWhite 1984; ...
increase in the number of cb1 immunopositive neurons in the
increase in the number of cb1 immunopositive neurons in the

... conditions of the animal but also upon the nature of the stressor itself. It is known that stress have wideranging effects on neuroendocrine, autonomic, immune, and hormonal function. Different research groups have shown induction of acute physical stress by low temperature exposure which have been ...
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Metastability in the brain

In the field of computational neuroscience, the theory of metastability refers to the human brain’s ability to integrate several functional parts and to produce neural oscillations in a cooperative and coordinated manner, providing the basis for conscious activity.Metastability, a state in which signals (such as oscillatory waves) fall outside their natural equilibrium state but persist for an extended period of time, is a principle that describes the brain’s ability to make sense out of seemingly random environmental cues. In the past 25 years, interest in metastability and the underlying framework of nonlinear dynamics has been fueled by advancements in the methods by which computers model brain activity.
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