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T2 - Center for Neural Basis of Cognition
T2 - Center for Neural Basis of Cognition

... Extrastriate Summary Remapping occurs at early stages of the visual hierarchy. Corollary discharge has an impact far back into the system. Remapping implies widespread connectivity in which many neurons have rapid access to information well beyond the classical receptive field. Vision is an active ...
Imaging the premotor areas Nathalie Picard* and Peter L Strick
Imaging the premotor areas Nathalie Picard* and Peter L Strick

... areas provide cognitive, sensory or motivational inputs for motor behavior, whereas the motor areas are concerned with more concrete aspects of movement (e.g. muscle patterns). Two important differences in the anatomical connections of the SMA and pre-SMA support this view. First, only the SMA is di ...
A1 - 58 - University of Pittsburgh
A1 - 58 - University of Pittsburgh

... called a filament) that when electrically stimulated, begins to pull thinner actin proteins together, a process deemed the Sliding Filament Theory of Muscle Contraction. Nature Journal describes the Sliding Filament Theory as if one was “given the task of bringing two bookcases together, [but are] l ...
Whole-brain functional imaging at cellular resolution using light
Whole-brain functional imaging at cellular resolution using light

... Although single-neuron recordings have revealed much about neural processing, recordings from larger populations can lead to fundamentally different insights. These include understanding how neuronal ensembles code for sensory input1–5, implement sensorimotor transformations6, drive motor output7 or ...
The role of ventral premotor cortex in action execution and action
The role of ventral premotor cortex in action execution and action

... portion of the inferior frontal cortex, mainly in area 44 of Brodmann. According to our own data, there seems to be a homology between Brodmann area 44 in humans and the monkey area F5. The non-language related motor functions of Broca’s region comprise complex hand movements, associative sensorimot ...
Layer IV of the primary somatosensory cortex has the highest
Layer IV of the primary somatosensory cortex has the highest

... A R T I C LE I N FO ...
Five-dimensional neuroimaging: Localization of the time–frequency
Five-dimensional neuroimaging: Localization of the time–frequency

... or positive, termed an event-related synchronization (ERS). Analyses of ERD and ERS overcome many of the limitations of evoked response analyses. However, most MEG/EEG time– ...
Brain-implantable biomimetic electronics as the next era in neural
Brain-implantable biomimetic electronics as the next era in neural

... will most likely involve hybrid analog/digital device designs. Fourth, the resulting microchip or multichip module must communicate with existing, living neural tissue in a bidirectional manner. Given that both electronic and neural systems generate and respond to electrical signals, this is feasibl ...
Methods of Studying The Nervous System - U
Methods of Studying The Nervous System - U

... • Its value lies in the fact that particular EEG wave forms are associated with particular states of consciousness; generally lowamplitude, fast EEG activity is associated with alert aroused state; and highamplitude, slow EEG activity (alpha waves) is associated with a relaxed but awake state Pinel' ...
T2 - Center for Neural Basis of Cognition
T2 - Center for Neural Basis of Cognition

... Remapping occurs at early stages of the visual hierarchy. Corollary discharge has an impact far back into the system. Remapping implies widespread connectivity in which many neurons have rapid access to information well beyond the classical receptive field. Vision is an active process of building re ...
Can the Psycho-Emotional State be Optimized by Regular Use of
Can the Psycho-Emotional State be Optimized by Regular Use of

... The guided imagery training is considered as an effective method and therefore widely used in modern cognitive psychotherapy, while less is known about the effectiveness of self-guided. The present study investigated the effects of regular use of self-guided positive imagery, applying both subjectiv ...
Neurophysiological investigation of the basis of the fMRI signal
Neurophysiological investigation of the basis of the fMRI signal

... slow-varying ®eld potentials. An ideal combination is functional imaging in experimental animals with microelectrode recordings of such potentials, including single-spike responses and ®eld potentials, whereby the latter relate well not only to spike activity but also to subthreshold integrative pro ...
An ultra small array of electrodes for stimulating multiple
An ultra small array of electrodes for stimulating multiple

... The technique of focal photolysis of caged glutamate offers a high degree of control over the spatiotemporal characteristics of stimuli to an individual neuron (Wang and Augustine, 1995). Although it is an invaluable tool for exploring many important questions about the spatial extent of glutamate a ...
Mircea Steriade
Mircea Steriade

... brain stem reticular effects on light-evoked responses in the lateral geniculate nucleus). However, I was "very ill" according to his officially appointed guide. Chang insisted, and eventually, I met him. He organized my visit at his brain institute in Shanghai. I did numerous experiments on cats in ...
Visuomotor neurons: ambiguity of the discharge or `motor` perception?
Visuomotor neurons: ambiguity of the discharge or `motor` perception?

... somatotopic representation of neck, proximal arm, trunk and facermouth movement ŽGentilucci et al., 1988.. Although the discharge of F4 neurons during the execution of trunk and neck movements is difficult to examine in normal laboratory conditions because the animal head is kept fixed during electr ...
Challenges for Brain Emulation
Challenges for Brain Emulation

... algorithmic approaches are bio-inspired, but their biological basis is, for the most part, simplified from the more-detailed models used by neuroscientists. Autonomous vehicles and other robotic applications are likely targets for such brain-like systems. 3. For the most part, computers still use th ...
- Donders Institute for Brain, Cognition and Behaviour
- Donders Institute for Brain, Cognition and Behaviour

... this action was guided by observation of the same action performed by another. This pattern of activity has been observed in the posterior inferior frontal gyrus in studies using functional magnetic resonance imaging (fMRI) (Iacoboni et al., 1999) and magnetoencephalography (Nishitani and Hari, 2000 ...
The organization of the cortical motor system: new concepts
The organization of the cortical motor system: new concepts

... the parieto-frontal connections form a series of segregated anatomical circuits devoted to specific sensorimotor transformations. These circuits transform sensory information into action. They represent the basic functional units of the motor system. Although these conclusions mostly derive from mon ...
(addl. 3)
(addl. 3)

... algorithmic approaches are bio-inspired, but their biological basis is, for the most part, simplified from the more-detailed models used by neuroscientists. Autonomous vehicles and other robotic applications are likely targets for such brain-like systems. 3. For the most part, computers still use th ...
- Wiley Online Library
- Wiley Online Library

... laevis. (a) The ex vivo brain (Figure 1a) now viewed from the side and illustrating subdivisions (hindbrain, midbrain, and forebrain) that include neural circuits participating in initiation of vocal patterns. In an adult male brain, nucleus ambiguus (NA) that includes glottal and laryngeal motor ne ...
Probing forebrain to hindbrain circuit functions in Xenopus
Probing forebrain to hindbrain circuit functions in Xenopus

... laevis. (a) The ex vivo brain (Figure 1a) now viewed from the side and illustrating subdivisions (hindbrain, midbrain, and forebrain) that include neural circuits participating in initiation of vocal patterns. In an adult male brain, nucleus ambiguus (NA) that includes glottal and laryngeal motor ne ...
Probing forebrain to hindbrain circuit functions in
Probing forebrain to hindbrain circuit functions in

... F I G U R E 3 Initiation and production of vocal motor patterns in X. laevis. (a) The ex vivo brain (Figure 1a) now viewed from the side and illustrating subdivisions (hindbrain, midbrain, and forebrain) that include neural circuits participating in initiation of vocal patterns. In an adult male bra ...
Biomechanics Models Motor Cortex Using Spinal Cord and Limb
Biomechanics Models Motor Cortex Using Spinal Cord and Limb

... signal nor does it represent motorneuron activity although it is closely related to them. In particular, the relation between muscular force and its control signal is not identical with the dynamics of an anatomical muscle (or with a combined action of several anatomical muscles, in case of a simpli ...
The posterior parietal cortex: Sensorimotor interface for the planning
The posterior parietal cortex: Sensorimotor interface for the planning

... rightward position (the top cell), another center, and the third leftward (bottom cell). These cells are also tuned for hand locations to the right, center, and left, respectively. In the PPC these responses are often described as a ‘gain field’, in the sense that variations in hand position do not ...
Local Field Potential in the Visual System
Local Field Potential in the Visual System

... lateral geniculate nucleus of the thalamus, with most projections arriving in the thalamocortical recipient layer 4 and some also in layer 6. From layer 4, which is often referred to as the granular layer due to the presence of granular cells in this layer, visual signals are sent to the supragranul ...
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Brain–computer interface

A brain–computer interface (BCI), sometimes called a mind-machine interface (MMI), direct neural interface (DNI), or brain–machine interface (BMI), is a direct communication pathway between the brain and an external device. BCIs are often directed at assisting, augmenting, or repairing human cognitive or sensory-motor functions.Research on BCIs began in the 1970s at the University of California, Los Angeles (UCLA) under a grant from the National Science Foundation, followed by a contract from DARPA. The papers published after this research also mark the first appearance of the expression brain–computer interface in scientific literature.The field of BCI research and development has since focused primarily on neuroprosthetics applications that aim at restoring damaged hearing, sight and movement. Thanks to the remarkable cortical plasticity of the brain, signals from implanted prostheses can, after adaptation, be handled by the brain like natural sensor or effector channels.Following years of animal experimentation, the first neuroprosthetic devices implanted in humans appeared in the mid-1990s.
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