ppt - BIAC – Duke
... In this period of intense research in the neurosciences, nothing is more promising than functional magnetic resonance imaging (fMRI) and positron emission tomography (PET) methods, which localize brain activities. These functional imaging methodologies map neurophysiological responses to cognitive, ...
... In this period of intense research in the neurosciences, nothing is more promising than functional magnetic resonance imaging (fMRI) and positron emission tomography (PET) methods, which localize brain activities. These functional imaging methodologies map neurophysiological responses to cognitive, ...
Rebuilding Brain Circuitry with Living Micro
... cortical neurons, the brains were removed and cerebrum was isolated. The cortices were dissociated in prewarmed trypsin (0.25%) + EDTA (1 mM) for 12 min at 37C. The trypsinEDTA was then removed and the tissue was triturated in HBSS containing DNase I (0.15 mg/mL). The cells were centrifuged at 1000 ...
... cortical neurons, the brains were removed and cerebrum was isolated. The cortices were dissociated in prewarmed trypsin (0.25%) + EDTA (1 mM) for 12 min at 37C. The trypsinEDTA was then removed and the tissue was triturated in HBSS containing DNase I (0.15 mg/mL). The cells were centrifuged at 1000 ...
Building Production Systems with Realistic Spiking Neurons Terrence C. Stewart ()
... representation of a particular value. For example, one particular firing pattern might represent the vector [-0.3,0,0.4,-0.6,0.6] (used in the previous section to represent the symbol cat). Importantly, the number of dimensions in the vector is not the same as the number of neurons in the neural gro ...
... representation of a particular value. For example, one particular firing pattern might represent the vector [-0.3,0,0.4,-0.6,0.6] (used in the previous section to represent the symbol cat). Importantly, the number of dimensions in the vector is not the same as the number of neurons in the neural gro ...
A Neural Circuit Basis for Spatial Working Memory
... the brain is inexorably linked with motor circuits for the guidance of eye and limb movements to visual targets. It is a challenge, therefore, to dissociate experimentally observed neuronal activity related to visual spatial memory with that related to the preparation of motor commands. A number of ...
... the brain is inexorably linked with motor circuits for the guidance of eye and limb movements to visual targets. It is a challenge, therefore, to dissociate experimentally observed neuronal activity related to visual spatial memory with that related to the preparation of motor commands. A number of ...
Luczak, 2015 - University of Lethbridge
... shown. Blue lines represent individual spikes and the grey region represents the tone duration (100 ms). b | A representative structure of a population packet. The sequential spread of the mean activity of 90 neurons, recorded simultaneously, in response to auditory tones is shown (the data are deri ...
... shown. Blue lines represent individual spikes and the grey region represents the tone duration (100 ms). b | A representative structure of a population packet. The sequential spread of the mean activity of 90 neurons, recorded simultaneously, in response to auditory tones is shown (the data are deri ...
Decision Making in Recurrent Neuronal Circuits
... this computational perspective. The focus will be on basic computations: (1) accumulation of evidence (what is the cellular basis of temporal accumulation of information?), (2) formation of a categorical choice (what is the termination rule for a deliberation process in neuronal terms?); (3) reward- ...
... this computational perspective. The focus will be on basic computations: (1) accumulation of evidence (what is the cellular basis of temporal accumulation of information?), (2) formation of a categorical choice (what is the termination rule for a deliberation process in neuronal terms?); (3) reward- ...
Document
... • For example, when we observe something very interesting (or frightening, or simply surprising), we become more alert and aware of our surroundings. • Circuits of neurons that secrete at least five different neurotransmitters play a role in some aspect of an animal’s level of alertness and wakefuln ...
... • For example, when we observe something very interesting (or frightening, or simply surprising), we become more alert and aware of our surroundings. • Circuits of neurons that secrete at least five different neurotransmitters play a role in some aspect of an animal’s level of alertness and wakefuln ...
Chapter 3 Lecture Notecards
... can be measured with a pair of microelectrodes connected to an oscilloscope. In a resting neuron, this difference, called the resting potential, is about ...
... can be measured with a pair of microelectrodes connected to an oscilloscope. In a resting neuron, this difference, called the resting potential, is about ...
Evolution and intelligence: beyond the argument
... wherever possible. Those lineages that evolved ways to effectively “off load” this information generation and transmission demand to a number of subsidiary systems, inevitably supplanted those for which time and numbers were the only recourse. For generations, biologists conceived of development and ...
... wherever possible. Those lineages that evolved ways to effectively “off load” this information generation and transmission demand to a number of subsidiary systems, inevitably supplanted those for which time and numbers were the only recourse. For generations, biologists conceived of development and ...
View PDF - CiteSeerX
... Figure 1. Temporal estimation data from humans (A, B) or rats (C, D) using peak-interval timing procedures. In the peak-interval procedure used with humans, participants were instructed to watch as a blue square appeared on a computer screen and to be “aware” of the amount of time that passed (eithe ...
... Figure 1. Temporal estimation data from humans (A, B) or rats (C, D) using peak-interval timing procedures. In the peak-interval procedure used with humans, participants were instructed to watch as a blue square appeared on a computer screen and to be “aware” of the amount of time that passed (eithe ...
Chapter 3 Editable Lecture Notecards
... can be measured with a pair of microelectrodes connected to an oscilloscope. In a resting neuron, this difference, called the resting potential, is about ...
... can be measured with a pair of microelectrodes connected to an oscilloscope. In a resting neuron, this difference, called the resting potential, is about ...
What is the other 85% of V1 doing?
... bursty or tonic? Do they tend to be encountered in particular layers of cortex? And most importantly, are they merely unresponsive to bars and gratings, or are they also equally uninterpretable in their responses to a wider variety of stimuli, such as natural images? A seasoned experimentalist who h ...
... bursty or tonic? Do they tend to be encountered in particular layers of cortex? And most importantly, are they merely unresponsive to bars and gratings, or are they also equally uninterpretable in their responses to a wider variety of stimuli, such as natural images? A seasoned experimentalist who h ...
What can cognitive psychology and sensory evaluation learn from
... integration reflects, at best, a learned association. However, anatomically independent systems can be cognitively or psychologically integrated. This point is clearer if we take the example of vision which is the most studied and best known perceptual system. It comprises two main subsystems themsel ...
... integration reflects, at best, a learned association. However, anatomically independent systems can be cognitively or psychologically integrated. This point is clearer if we take the example of vision which is the most studied and best known perceptual system. It comprises two main subsystems themsel ...
decision-making in the primate brain
... 2002). On a reaction time eye movement task, anticipatory activity in the caudate was maximal when the contralateral target was reliably rewarded, and tracked changes in the monkeys‘ response time as the rewarded location was reversed (Lauwereyns et al. 2002). Anticipatory activity was absent, howev ...
... 2002). On a reaction time eye movement task, anticipatory activity in the caudate was maximal when the contralateral target was reliably rewarded, and tracked changes in the monkeys‘ response time as the rewarded location was reversed (Lauwereyns et al. 2002). Anticipatory activity was absent, howev ...
Feeding in an Artificial Insect
... also proven to be essential for explaining the behavior of simpler animals as well. Unfortunately, the explanatory utility of these internal factors is limited by the fact that they are hypothetical constructs, inferred by the theorist to intervene between stimulus and action in order to account for ...
... also proven to be essential for explaining the behavior of simpler animals as well. Unfortunately, the explanatory utility of these internal factors is limited by the fact that they are hypothetical constructs, inferred by the theorist to intervene between stimulus and action in order to account for ...
Unit One: Introduction to Physiology: The Cell and General Physiology
... • Function of the Corticorubrospinal System a. Accessory route for transmission of discrete signals from the motor cortex to the spinal cord ...
... • Function of the Corticorubrospinal System a. Accessory route for transmission of discrete signals from the motor cortex to the spinal cord ...
internal structure of the brain stem
... They activate the cerebral cortex through the thalamus. ...
... They activate the cerebral cortex through the thalamus. ...
Neural Crest - bthsresearch
... • Identify Derivatives of the Ectoderm, and Neural Ectoderm • Define Neurulation • Define Primary versus Secondary Neurulation • Identify different mechanism of Neurulation in mammals • Define “Neural Crest” & identify the adult structures formed by these cells ...
... • Identify Derivatives of the Ectoderm, and Neural Ectoderm • Define Neurulation • Define Primary versus Secondary Neurulation • Identify different mechanism of Neurulation in mammals • Define “Neural Crest” & identify the adult structures formed by these cells ...
Towards an integrated understanding of the biology of timing Valter Tucci
... is a pivotal biological function that supports fundamental cognitive (e.g. memory, attention, decision-making) and physiological (e.g. daily variations of hormones and sleep –wake cycles) processes. Behavioural, neurobiological and computational investigation of timing has formed a rich literature o ...
... is a pivotal biological function that supports fundamental cognitive (e.g. memory, attention, decision-making) and physiological (e.g. daily variations of hormones and sleep –wake cycles) processes. Behavioural, neurobiological and computational investigation of timing has formed a rich literature o ...
the brain as a system of aggregation of social, behavioral and
... NO, which involves in the elimination of mistargeted axons. Producing both BDNF and NO, but not either factor alone, genetic net ensures minimal retraction or extension of growth cones [Ernst et al. 2000]. One can see also that the selection of a Nuclea_supplier by the Nuclea_client depends on their ...
... NO, which involves in the elimination of mistargeted axons. Producing both BDNF and NO, but not either factor alone, genetic net ensures minimal retraction or extension of growth cones [Ernst et al. 2000]. One can see also that the selection of a Nuclea_supplier by the Nuclea_client depends on their ...
“Parcelation of the White Matter Using DTI: Insights into the
... are the corpus callosum and the anterior commissure. The fornix also has a small commissural component (hippocampal commissure) however, due to its predominant association fibers is included in the association fiber systems. The commissural system plays an important role in interhemispheric function ...
... are the corpus callosum and the anterior commissure. The fornix also has a small commissural component (hippocampal commissure) however, due to its predominant association fibers is included in the association fiber systems. The commissural system plays an important role in interhemispheric function ...
Parietal Cortex and Hippocampal Contributions to RuleBased
... All of the studies and information up to this point have been concerning spatial fragmentation in relation to physical boundaries. For example, an animal navigating freely through a room, or running along a specific route. In these cases, the walls of the room, or the edges of the track, constitut ...
... All of the studies and information up to this point have been concerning spatial fragmentation in relation to physical boundaries. For example, an animal navigating freely through a room, or running along a specific route. In these cases, the walls of the room, or the edges of the track, constitut ...
Neural Axis Representing Target Range in the Auditory
... amplitude domains, and as such they may be considered cross-correlators (14). Spectroscopy with a Single Pulse of Laser-Produced X-rays Odotopic representation is the term we use to describe the representation of Abstract. The extended x-ray absorption fine structure (EXAFS) spectrum of target range ...
... amplitude domains, and as such they may be considered cross-correlators (14). Spectroscopy with a Single Pulse of Laser-Produced X-rays Odotopic representation is the term we use to describe the representation of Abstract. The extended x-ray absorption fine structure (EXAFS) spectrum of target range ...
Biology 358 — Neuroanatomy First Exam
... somesthetic cortex of the cerebrum. Within the brain this tract gives off collateral branches to the basal ganglia, thalamus, cerebellum and reticular formation. This tract is concerned with fine motor control, and would be found within all segments of the spinal cord. PT ...
... somesthetic cortex of the cerebrum. Within the brain this tract gives off collateral branches to the basal ganglia, thalamus, cerebellum and reticular formation. This tract is concerned with fine motor control, and would be found within all segments of the spinal cord. PT ...
Basic functional neuroanatomy
... disordered, thereby indicating the site of an irritating or a destructive lesion. In many cases the functions of these regions have been deduced principally from correlation of clinical conditions with pathological findings, either after death or in images of the living brain. Many disorders affecti ...
... disordered, thereby indicating the site of an irritating or a destructive lesion. In many cases the functions of these regions have been deduced principally from correlation of clinical conditions with pathological findings, either after death or in images of the living brain. Many disorders affecti ...
Neural correlates of consciousness
The neural correlates of consciousness (NCC) constitute the minimal set of neuronal events and mechanisms sufficient for a specific conscious percept. Neuroscientists use empirical approaches to discover neural correlates of subjective phenomena. The set should be minimal because, under the assumption that the brain is sufficient to give rise to any given conscious experience, the question is which of its components is necessary to produce it.