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neurotransmitters
neurotransmitters

...  Potassium ions rush out of the neuron after sodium ions rush in, which repolarizes the membrane  The sodium-potassium pump, using ATP, restores the ...
Advanced biomaterial strategies to transplant preformed micro
Advanced biomaterial strategies to transplant preformed micro

... while axonal guidance techniques generally fail to address degeneration of neuronal populations. We have advanced micro-tissue engineering techniques to create tubular biomaterial micro-columns (less than half the diameter of a DBS lead) that allow for a well-controlled 3D environment with appropria ...
The Frame of Cognitive Pattern Recognition
The Frame of Cognitive Pattern Recognition

... the frame of tradition machine pattern recognition was described. How to apply achievement of cognitive science to traditional machine pattern recognition by combining with characteristic of machine pattern recognition was discussed. Recognition of printed digit character was performed according to ...
Evolution of Vertebrate Brains - CIHR Group in Sensory
Evolution of Vertebrate Brains - CIHR Group in Sensory

... (jawless vertebrates) and three radiations of jawed vertebrates: (1) the cartilaginous fishes (chimaeras and sharks, skates, and rays), (2) the ray-finned fishes (bony fishes), and (3) the sarcopterygian (fleshyfinned fish) radiation, which includes tetrapods (amphibians, mammals, reptiles, and bird ...
CHAPTER 12: THE CENTRAL NERVOUS SYSTEM MODULE 12.1
CHAPTER 12: THE CENTRAL NERVOUS SYSTEM MODULE 12.1

...  Third ventricle is found between these two regions  Thalamic nuclei receive afferent fibers from many other regions of nervous system excluding information about the sense of smell ...
Theme 6. Vision
Theme 6. Vision

... are adequate. The vibrations are transmitted to the hair cells in the cochlea via the tympanic membrane and the ossicles. (1) Describe the organisation of the hair cells in the organ of Corti and their transduction mechanisms? (4p) (2) Describe the way the nerve impulses elicited by the hair cells t ...
3.05 Neural Substrates of Remembering – Electroencephalographic
3.05 Neural Substrates of Remembering – Electroencephalographic

... positive and negative deflections, the timing and waveshape of which vary with the nature of the stimuli and the neural operations performed in response to the stimuli. Some ERPs, such as the brainstem auditory evoked potentials produced during the first 10 ms after a click, have very small amplitud ...
Contacts among non-sister dendritic branches at
Contacts among non-sister dendritic branches at

... Fig. 2 – BDIs are frequent, non-random, stable and activity regulated structures: Analysis was performed either on 12DIV cultures immunostained for MAP2, or on phase-contrast time-lapse series of images. Treatments were administered for the final 48 h before immunostaining. (A) Neuronal cultures exh ...
emotions, learning and control
emotions, learning and control

... “match” these top-down and bottom-up activations by selecting “best” models and their parameters. Mathematically, learning increases a similarity measure between the sets of models and signals, L({X(n)},{Mh(n)}). The similarity measure is a function of model parameters and associations between the i ...
Elastic instabilities in a layered cerebral cortex: A revised axonal
Elastic instabilities in a layered cerebral cortex: A revised axonal

... demonstrate that the intracortical buckling drives folding and not axonal tension from the underlying white matter, though the effect of growth of cells outside the cortex, i.e. new white matter, cannot be ruled out [5]. In addition, a quantitative model of buckling of an elastic plate (the top laye ...
New neurons retire early - The Gould Lab
New neurons retire early - The Gould Lab

... activation, and not just new neuron presence, in the hippocampus is critical for memory retrieval and enhanced synaptic plasticity. This study opens the door for the use of optogenetic techniques to confirm the influence of new neurons of different ages on other proposed functions, such as pattern s ...
Systems memory consolidation in Drosophila
Systems memory consolidation in Drosophila

... the site of storage because transmission is dispensable during retrieval. By contrast, output from the combination of a/b and g lobes is not needed during acquisition or early storage [26–28]. Retrieval, on the other hand, is disrupted when transmission in a/b neurons is blocked, consistent with the ...
Glioblastoma - The Brain Tumour Charity
Glioblastoma - The Brain Tumour Charity

... surgeon will try to remove as much as it is possible to do safely. However, it can be difficult to identify the edges of the main part of the tumour. Recent advances (funded by The Brain Tumour Charity and Cancer Research UK) have improved surgeons’ ability to remove more of the tumour. Prior to sur ...
feature analyzers in the brain
feature analyzers in the brain

...  prey-catching in the laboratory  worm stimulus  releasing value  ~ s  antiworm (= “amount”)  releasing value  ~ s  square  biphasic ~ s (bugs  predators ?) ...
Glioblastoma - The Brain Tumour Charity
Glioblastoma - The Brain Tumour Charity

... The chemoradiation is used to slow the growth of any tumour cells that cannot be removed by surgery. Chemoradiation comprises radiotherapy over a period of weeks and rounds of the chemotherapy drug temozolomide (TMZ). Temozolomide works by stopping tumour cells from making new DNA (the material that ...
– Necrosis Brain, Neuron 1
– Necrosis Brain, Neuron 1

... that impairs neuronal energy metabolism. In this case, the change has been referred to as acute eosinophilic necrosis, “acute metabolic arrest,” “acute ischemic change,” or, more colloquially, “red dead” neurons. Neuronal necrosis should be carefully differentiated from dark neuron artifact (see Bra ...
lgn - cinpla
lgn - cinpla

... surprising because the LGN does not only receive input from the ganglion cells of the retina alone. About 80 % of the excitatory input to the LGN is feedback from the visual cortex. One would therefore expect the LGN to be more heavily influenced by visual cortex and the response not so similar to t ...
The Brain, Consciousness, and the Afterlife
The Brain, Consciousness, and the Afterlife

... derivative from consciousness. We cannot get behind consciousness. Everything that we talk about, everything that we regard as existing, postulates consciousness.” [81] The pursuit to determine the nature of human consciousness has been a focus of study by scientists from the fields of neuroscience, ...
Synaptic and extrasynaptic traces of long-term memory
Synaptic and extrasynaptic traces of long-term memory

... Abstract: It is generally assumed at the time of this writing that memories are stored in the form of synaptic weights. However, it is now also clear that the synapses are not permanent; in fact, synaptic patterns undergo significant change in a matter of hours. This means that to implement the long ...
6 - smw15.org
6 - smw15.org

... • Bitter receptors are sensitive to a wide range of chemicals with varying degrees of toxicity • About 25 types of bitter receptors exist • Most taste cells contain only a small number of these receptors • We are sensitive to a wide range of harmful substances, but not highly sensitive to any single ...
Emergentism
Emergentism

... strongly emergent properties have been discovered. But some candidates have been proposed. For example, the Oxford mathematician has argued that some kinds of crystal formation are strongly emergent. Molecules add themselves to a crystal in such a way as form a particular crystal structure, but ther ...
Automatic and Controlled Processes in Semantic Priming: an Attractor Neural
Automatic and Controlled Processes in Semantic Priming: an Attractor Neural

... Attractor networks are probably more true to the biological nature of real neuronal dynamics which include contentaddressable memories, distributed representations and attractor states. However, they fall short in explaining several important priming results. Mediated priming is one example (e.g. Mc ...
Neurons - Cloudfront.net
Neurons - Cloudfront.net

...  Potassium ions rush out of the neuron after sodium ions rush in, which repolarizes the membrane  The sodium-potassium pump, using ATP, restores the ...
2/ the biological perspective - College Test bank
2/ the biological perspective - College Test bank

... MyPsychLab Video Clips:  List of Video Resources MyPsychLab Multimedia Resources:  List of Multimedia Resources PowerPoint Slides:  Link to PowerPoint slides Describe a typical neuron. Distinguish between afferent, efferent, and association neurons (text pp. 42-44). ...
Memory
Memory

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Holonomic brain theory

The holonomic brain theory, developed by neuroscientist Karl Pribram initially in collaboration with physicist David Bohm, is a model of human cognition that describes the brain as a holographic storage network. Pribram suggests these processes involve electric oscillations in the brain's fine-fibered dendritic webs, which are different from the more commonly known action potentials involving axons and synapses. These oscillations are waves and create wave interference patterns in which memory is encoded naturally, and the waves may be analyzed by a Fourier transform. Gabor, Pribram and others noted the similarities between these brain processes and the storage of information in a hologram, which can also be analyzed with a Fourier transform. In a hologram, any part of the hologram with sufficient size contains the whole of the stored information. In this theory, a piece of a long-term memory is similarly distributed over a dendritic arbor so that each part of the dendritic network contains all the information stored over the entire network. This model allows for important aspects of human consciousness, including the fast associative memory that allows for connections between different pieces of stored information and the non-locality of memory storage (a specific memory is not stored in a specific location, i.e. a certain neuron).
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