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Computational Neuroscience

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Articles 331 - 360 of 408

Full-Text Articles in Neuroscience and Neurobiology

Quantitative Modeling Of The Neural Representation Of Objects: How Semantic Feature Norms Can Account For Fmri Activation, Kai-Min Kevin Chang, Tom Mitchell, Marcel Adam Just Dec 2010

Quantitative Modeling Of The Neural Representation Of Objects: How Semantic Feature Norms Can Account For Fmri Activation, Kai-Min Kevin Chang, Tom Mitchell, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Individual Differences In The Neural Basis Of Causal Inferencing, Chantel S. Prat, Robert A. Mason, Marcel Adam Just Dec 2010

Individual Differences In The Neural Basis Of Causal Inferencing, Chantel S. Prat, Robert A. Mason, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Commonality Of Neural Representations Of Words And Pictures, Svetlana V. Shinkareva, Vincente L. Malave, Robert A. Mason, Tom M. Mitchell, Marcel Adam Just Dec 2010

Commonality Of Neural Representations Of Words And Pictures, Svetlana V. Shinkareva, Vincente L. Malave, Robert A. Mason, Tom M. Mitchell, Marcel Adam Just

Marcel Adam Just

No abstract provided.


The Neural Basis Of Deictic Shifting In Linguistic Perspective-Taking In High-Functioning Autism, Akiko Mizuno, Yanni Liu, Diane L. Williams, Timothy A. Keller, Nancy J. Minshew, Marcel Adam Just Dec 2010

The Neural Basis Of Deictic Shifting In Linguistic Perspective-Taking In High-Functioning Autism, Akiko Mizuno, Yanni Liu, Diane L. Williams, Timothy A. Keller, Nancy J. Minshew, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Exploring The Neural Dynamics Underpinning Individual Differences In Sentence Comprehension, Chantel S. Prat, Marcel Adam Just Dec 2010

Exploring The Neural Dynamics Underpinning Individual Differences In Sentence Comprehension, Chantel S. Prat, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Computational Modeling Of Biological Neural Networks On Gpus: Strategies And Performance, Byron Galbraith Jul 2010

Computational Modeling Of Biological Neural Networks On Gpus: Strategies And Performance, Byron Galbraith

Master's Theses (2009 -)

Simulating biological neural networks is an important task for computational neuroscientists attempting to model and analyze brain activity and function. As these networks become larger and more complex, the computational power required grows significantly, often requiring the use of supercomputers or compute clusters. An emerging low-cost, highly accessible alternative to many of these resources is the Graphics Processing Unit (GPU) - specialized massively-parallel graphics hardware that has seen increasing use as a general purpose computational accelerator thanks largely due to NVIDIA's CUDA programming interface. We evaluated the relative benefits and limitations of GPU-based tools for large-scale neural network simulation and …


Metastability And Plasticity In A Conceptual Model Of Neurons, Bo Deng Jan 2010

Metastability And Plasticity In A Conceptual Model Of Neurons, Bo Deng

Department of Mathematics: Faculty Publications

For a new class of neuron models we demonstrate here that typical membrane action potentials and spike-bursts are only transient states but appear to be asymptotically stable; and yet such metastable states are plastic — being able to dynamically change from one action potential to another with different pulse frequencies and from one spike-burst to another with different spike-per-burst numbers. The pulse and spike-burst frequencies change with individual ions’ pump currents while their corresponding metastable-plastic states maintain the same transmembrane voltage and current profiles in range. It is also demonstrated that the plasticity requires two one-way ion pumps operating in …


Robust Dynamic Balance Of Ap-1 Transcription Factors In A Neuronal Gene Regulatory Network., Gregory M Miller, Babatunde A Ogunnaike, James S Schwaber, Rajanikanth Vadigepalli Jan 2010

Robust Dynamic Balance Of Ap-1 Transcription Factors In A Neuronal Gene Regulatory Network., Gregory M Miller, Babatunde A Ogunnaike, James S Schwaber, Rajanikanth Vadigepalli

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

BACKGROUND: The octapeptide Angiotensin II is a key hormone that acts via its receptor AT1R in the brainstem to modulate the blood pressure control circuits and thus plays a central role in the cardiac and respiratory homeostasis. This modulation occurs via activation of a complex network of signaling proteins and transcription factors, leading to changes in levels of key genes and proteins. AT1R initiated activity in the nucleus tractus solitarius (NTS), which regulates blood pressure, has been the subject of extensive molecular analysis. But the adaptive network interactions in the NTS response to AT1R, plausibly related to the development of …


Cortical Underconnectivity Coupled With Preserved Visuospatial Cognition In Autism: Evidence From An Fmri Study Of An Embedded Figures Task, Saudamini Damarla, Timothy A. Keller, Rajesh K. Kana, Vladimir L. Cherkassky, Diane L. Williams, Nancy J. Minshew, Marcel Adam Just Dec 2009

Cortical Underconnectivity Coupled With Preserved Visuospatial Cognition In Autism: Evidence From An Fmri Study Of An Embedded Figures Task, Saudamini Damarla, Timothy A. Keller, Rajesh K. Kana, Vladimir L. Cherkassky, Diane L. Williams, Nancy J. Minshew, Marcel Adam Just

Marcel Adam Just

No abstract provided.


A Neurosemantic Theory Of Concrete Noun Representation Based On The Underlying Brain Codes, Marcel Adam Just, Vladimir L. Cherkassky, Sandesh Aryal, Tom M. Mitchell Dec 2009

A Neurosemantic Theory Of Concrete Noun Representation Based On The Underlying Brain Codes, Marcel Adam Just, Vladimir L. Cherkassky, Sandesh Aryal, Tom M. Mitchell

Marcel Adam Just

No abstract provided.


Conceptual Circuit Models Of Neurons, Bo Deng Jan 2009

Conceptual Circuit Models Of Neurons, Bo Deng

Department of Mathematics: Faculty Publications

A systematic circuit approach tomodel neurons with ion pump is presented here by which the voltage-gated current channels are modeled as conductors, the diffusion-induced current channels are modeled as negative resistors, and the one-way ion pumps are modeled as one-way inductors. The newly synthesized models are different from the type of models based on Hodgkin-Huxley (HH) approach which aggregates the electro, the diffusive, and the pump channels of each ion into one conductance channel. We show that our new models not only recover many known properties of the HH type models but also exhibit some new that cannot be extracted …


Brain Activation For Reading And Listening Comprehension: An Fmri Study Of Modality Effects And Individual Differences In Language Comprehension., Augusto Buchweitz, Robert Mason, Tomitch Leda, Marcel Just Dec 2008

Brain Activation For Reading And Listening Comprehension: An Fmri Study Of Modality Effects And Individual Differences In Language Comprehension., Augusto Buchweitz, Robert Mason, Tomitch Leda, Marcel Just

Marcel Adam Just

No abstract provided.


Altering Cortical Connectivity: Remediation-Induced Changes In The White Matter Of Poor Readers, Timothy Keller, Marcel Just Dec 2008

Altering Cortical Connectivity: Remediation-Induced Changes In The White Matter Of Poor Readers, Timothy Keller, Marcel Just

Marcel Adam Just

No abstract provided.


Japanese And English Sentence Reading Comprehension And Writing Systems: An Fmri Study Of First And Second Language Effects On Brain Activation, Augusto Buchweitz, Robert A. Mason, Akiko Hasegawa, Marcel Adam Just Dec 2008

Japanese And English Sentence Reading Comprehension And Writing Systems: An Fmri Study Of First And Second Language Effects On Brain Activation, Augusto Buchweitz, Robert A. Mason, Akiko Hasegawa, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Atypical Frontal-Posterior Synchronization Of Theory Of Mind Regions In Autism During Mental State Attribution, Rajesh K. Kana, Timothy A. Keller, Vladimir L. Cherkassky, Nancy J. Minshew, Marcel Adam Just Dec 2008

Atypical Frontal-Posterior Synchronization Of Theory Of Mind Regions In Autism During Mental State Attribution, Rajesh K. Kana, Timothy A. Keller, Vladimir L. Cherkassky, Nancy J. Minshew, Marcel Adam Just

Marcel Adam Just

No abstract provided.


The Role Of The Theory-Of-Mind Cortical Network In The Comprehension Of Narratives, Robert Mason, Marcel Just Dec 2008

The Role Of The Theory-Of-Mind Cortical Network In The Comprehension Of Narratives, Robert Mason, Marcel Just

Marcel Adam Just

No abstract provided.


Brain Bases Of Individual Differences In Cognition, Chantel Prat, Marcel Just Dec 2007

Brain Bases Of Individual Differences In Cognition, Chantel Prat, Marcel Just

Marcel Adam Just

No abstract provided.


A Decrease In Brain Activation Associated With Driving When Listening To Someone Speak, Marcel Just, Timothy Keller, Jacquelyn Cynkar Dec 2007

A Decrease In Brain Activation Associated With Driving When Listening To Someone Speak, Marcel Just, Timothy Keller, Jacquelyn Cynkar

Marcel Adam Just

No abstract provided.


Fmri Investigation Of Working Memory For Faces In Autism: Visual Coding And Underconnectivity With Frontal Areas, Hideya Koshino, Rajesh Kana, Timothy Keller, Vladimir Cherkassky, Nancy Minshew, Marcel Just Dec 2007

Fmri Investigation Of Working Memory For Faces In Autism: Visual Coding And Underconnectivity With Frontal Areas, Hideya Koshino, Rajesh Kana, Timothy Keller, Vladimir Cherkassky, Nancy Minshew, Marcel Just

Marcel Adam Just

No abstract provided.


Using Fmri Brain Activation To Identify Cognitive States Associated With Perception Of Tools And Dwellings, Svetlana V. Shinkareva, Robert A. Mason, Vicente L. Malave, Wei Wang, Tom M. Mitchell, Marcel Adam Just Dec 2007

Using Fmri Brain Activation To Identify Cognitive States Associated With Perception Of Tools And Dwellings, Svetlana V. Shinkareva, Robert A. Mason, Vicente L. Malave, Wei Wang, Tom M. Mitchell, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Modifying The Brain Activation Of Poor Readers During Sentence Comprehension With Extended Remedial Instruction: A Longitudinal Study Of Neuroplasticity, Ann Meyler, Timothy A. Keller, Vladimir L. Cherkassky, John D. E. Gabrieli, Marcel Adam Just Dec 2007

Modifying The Brain Activation Of Poor Readers During Sentence Comprehension With Extended Remedial Instruction: A Longitudinal Study Of Neuroplasticity, Ann Meyler, Timothy A. Keller, Vladimir L. Cherkassky, John D. E. Gabrieli, Marcel Adam Just

Marcel Adam Just

No abstract provided.


What Brain Imaging Can Tell Us About Embodied Meaning, Marcel Adam Just Dec 2007

What Brain Imaging Can Tell Us About Embodied Meaning, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Theory Of Mind Disruption And Recruitment Of The Right Hemisphere During Narrative Comprehension In Autism, Robert A. Mason, Diane L. Williams, Rajesh K. Kana, Nancy J. Minshew, Marcel Adam Just Dec 2007

Theory Of Mind Disruption And Recruitment Of The Right Hemisphere During Narrative Comprehension In Autism, Robert A. Mason, Diane L. Williams, Rajesh K. Kana, Nancy J. Minshew, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Predicting Human Brain Activity Associated With The Meanings Of Nouns, Tom M. Mitchell, Svetlana V. Shinkareva, Andrew Carlson, Kai-Min Chang, Vicente L. Malave, Robert A. Mason, Marcel Adam Just Dec 2007

Predicting Human Brain Activity Associated With The Meanings Of Nouns, Tom M. Mitchell, Svetlana V. Shinkareva, Andrew Carlson, Kai-Min Chang, Vicente L. Malave, Robert A. Mason, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Volitional Control Of Attention And Brain Activation In Dual Task Performance, Sharlene Newman, Timothy Keller, Marcel Just Dec 2006

Volitional Control Of Attention And Brain Activation In Dual Task Performance, Sharlene Newman, Timothy Keller, Marcel Just

Marcel Adam Just

No abstract provided.


Inhibitory Control In High Functioning Autism: Decreased Activation And Underconnectivity In Inhibition Networks, Rajesh Kana, Timothy Keller, Nancy Minshew, Marcel Just Dec 2006

Inhibitory Control In High Functioning Autism: Decreased Activation And Underconnectivity In Inhibition Networks, Rajesh Kana, Timothy Keller, Nancy Minshew, Marcel Just

Marcel Adam Just

No abstract provided.


Brain Activation During Sentence Comprehension Among Good And Poor Readers, Ann Meyler, Timothy A. Keller, Vladimir L. Cherkassky, Donghoon Lee, Fumiko Hoeft, Susan Whitfield-Gabrieli, John D. E. Gabrieli, Marcel Adam Just Dec 2006

Brain Activation During Sentence Comprehension Among Good And Poor Readers, Ann Meyler, Timothy A. Keller, Vladimir L. Cherkassky, Donghoon Lee, Fumiko Hoeft, Susan Whitfield-Gabrieli, John D. E. Gabrieli, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Individual Differences In Sentence Comprehension: A Functional Magnetic Resonance Imaging Investigation Of Syntactic And Lexical Processing Demands, Chantel S. Prat, Timothy A. Keller, Marcel Adam Just Dec 2006

Individual Differences In Sentence Comprehension: A Functional Magnetic Resonance Imaging Investigation Of Syntactic And Lexical Processing Demands, Chantel S. Prat, Timothy A. Keller, Marcel Adam Just

Marcel Adam Just

No abstract provided.


The Organization Of Thinking: What Functional Brain Imaging Reveals About The Neuroarchitecture Of Complex Cognition, Marcel Adam Just, Sashank Varma Dec 2006

The Organization Of Thinking: What Functional Brain Imaging Reveals About The Neuroarchitecture Of Complex Cognition, Marcel Adam Just, Sashank Varma

Marcel Adam Just

No abstract provided.


Lexical Ambiguity In Sentence Comprehension, Robert A. Mason, Marcel Adam Just Dec 2006

Lexical Ambiguity In Sentence Comprehension, Robert A. Mason, Marcel Adam Just

Marcel Adam Just

No abstract provided.