Research Topics
| John HartSummaryAffiliation: University of Texas at Dallas Country: USA Publications
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Detail Information
Publications
Neural substrates of semantic memoryJohn Hart
Center for BrainHealth, School of Behavioral and Brain Sciences, The University of Texas at Dallas, Texas 75235, USA
J Int Neuropsychol Soc 13:865-80. 2007..Future directions should incorporate available and newly developed techniques to better inform the neural underpinning of semantic memory models...
Neuroimaging of cognitive dysfunction and depression in aging retired National Football League players: a cross-sectional studyJohn Hart
Berman Laboratory for Learning and Memory, Center for Brain Health, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 2200 W Mockingbird Ln, Dallas, TX 75235, USA
JAMA Neurol 70:326-35. 2013..CONCLUSIONS Cognitive deficits and depression appear to be more common in aging former NFL players compared with healthy controls. These deficits are correlated with white matter abnormalities and changes in regional cerebral blood flow...- Cognitive dysfunctions associated with PTSD: evidence from World War II prisoners of warJohn Hart
Center for BrainHealth, The University of Texas at Dallas, 2200 W Mockingbird Lane, Dallas, TX 75235, USA
J Neuropsychiatry Clin Neurosci 20:309-16. 2008..There is a suggestion that some cognitive decrements occur in PTSD patients only when they have comorbid psychiatric diagnoses... - Clinical functional magnetic resonance imagingJohn Hart
Behavioral Neurology Section of the American Academy of Neurology, Minneapolis, MN, USA
Cogn Behav Neurol 20:141-4. 2007..To describe a new series of evaluation/procedural codes that were approved by the American Medical Association (AMA) CPT Editorial Panel for use in billing for these procedures by physicians or licensed clinical psychologists... 
Event-related potential patterns associated with hyperarousal in Gulf War illness syndrome groupsGail D Tillman
Center for BrainHealth, The University of Texas at Dallas, USA
Neurotoxicology 33:1096-105. 2012..All three syndrome groups showed an attenuated P3b to target stimuli, which could be secondary to both cholinergic and dopaminergic contributions or disruption of white matter integrity...- The influence of perceptual and semantic categorization on inhibitory processing as measured by the N2-P3 responseMandy J Maguire
Center for BrainHealth, University of Texas at Dallas, Dallas, TX 75235, USA
Brain Cogn 71:196-203. 2009..Thus, the level of complexity of conceptual-semantic representations influences inhibitory processing in a systematic way. This inhibition paradigm may be a key for investigating inhibitory dysfunction in patient populations... - Subjective report of word-finding and memory deficits in normal aging and dementiaClifford S Calley
Berman Laboratory of Learning and Memory, Center for BrainHealth, The University of Texas at Dallas, Dallas, TX 75235, USA
Cogn Behav Neurol 23:185-91. 2010..Compare subjective reports of both memory and word-finding deficits to clinical diagnosis and objective neuropsychological testing... - Frontal theta and alpha power and coherence changes are modulated by semantic complexity in Go/NoGo tasksMatthew R Brier
Berman Laboratory for Learning and Memory, Center for BrainHealth, The University of Texas at Dallas, TX 75235, USA
Int J Psychophysiol 78:215-24. 2010.... - Impaired response inhibition in ill Gulf War veteransGail D Tillman
School of Behavioral and Brain Sciences, Center for BrainHealth, The University of Texas at Dallas, Dallas, TX, United States
J Neurol Sci 297:1-5. 2010..This supports the contention that the ill veterans' deficit lies more in inhibiting than in detecting task-related differences in the stimuli... - Visual event-related potentials as markers of hyperarousal in Gulf War illness: evidence against a stress-related etiologyGail D Tillman
Center for BrainHealth, The University of Texas at Dallas, USA
Psychiatry Res 211:257-67. 2013.... - Event-related potentials in semantic memory retrievalMatthew R Brier
Berman Laboratory for Learning and Memory, Center for Brain Health, School of Behavioral and Brain Sciences, The University of Texas at Dallas, Dallas, Texas, USA
J Int Neuropsychol Soc 14:815-22. 2008..The consistency of this finding suggests that the process is stable across individuals. The potential clinical applications are discussed... - The neuroanatomic correlates of semantic memory deficits in patients with Gulf War illnesses: a pilot studyClifford S Calley
Center for BrainHealth, University of Texas at Dallas, Dallas, TX 75235, USA
Brain Imaging Behav 4:248-55. 2010..The combination of performance deficits and functional neuroimaging differences between affected Gulf War veterans and deployed normal controls begins to establish a neurobiological basis for their word-finding deficits... - Repetitive transcranial magnetic stimulation and threat memory: selective reduction of combat threat memory p300 response after right frontal-lobe stimulationGail D Tillman
Center for BrainHealth, University of Texas, Dallas, TX 75235, USA
J Neuropsychiatry Clin Neurosci 23:40-7. 2011..In addition to providing evidence for the effectiveness of right frontal rTMS for an exaggerated response to trauma-related stimuli, this study provides electrophysiological corroboration of subjective reports of PTSD symptoms... - Hippocampal dysfunction in Gulf War veterans: investigation with ASL perfusion MR imaging and physostigmine challengeXiufeng Li
Departments of Radiology, Division of Neuroradiology, Internal Medicine, Clinical Sciences, Psychiatry, and Neurology, University of Texas Southwestern Medical Center, Dallas, TX 75390 8874, USA
Radiology 261:218-25. 2011..ASL MR imaging examination of hippocampal rCBF in a cholinergic challenge experiment may be useful as a diagnostic test for this condition... - Gist reasoning training in cognitively normal seniorsRaksha Anand
Center for BrainHealth, The University of Texas at Dallas, Dallas, TX, USA
Int J Geriatr Psychiatry 26:961-8. 2011.... - The influence of carbon dioxide on brain activity and metabolism in conscious humansFeng Xu
Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
J Cereb Blood Flow Metab 31:58-67. 2011.... - Removing an intersubject variance component in a general linear model improves multiway factoring of event-related spectral perturbations in group EEG studiesJeffrey S Spence
Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
Hum Brain Mapp 34:651-64. 2013.... - Space-time-frequency analysis of EEG data using within-subject statistical tests followed by sequential PCAThomas C Ferree
Department of Radiology, University of Texas Southwestern Medical Center, Dallas, 75390 8896, USA
Neuroimage 45:109-21. 2009..It is concluded that STAT-PCA is well suited for analyzing the time-varying spectral content of EEG during cognitive tasks... - Object activation from features in the semantic systemMichael A Kraut
Division of Neuroradiology, John Hopkins Hospital, Johns Hopkins University, Baltimore, MD 21287, USA
J Cogn Neurosci 14:24-36. 2002..These results suggest that the thalamus has a critical role in coordinating the cortical activity required for activating an object concept in the semantic system... - Object activation in semantic memory from visual multimodal feature inputMichael A Kraut
Division of Neuroradiology, Johns Hopkins Hospital, Johns Hopkins University, Baltimore, MD 21287, USA
J Cogn Neurosci 14:37-47. 2002..The somatomotor signal changes are likely secondary to activation of the semantic object representations from multimodal visual stimuli... - Neural hybrid model of semantic object memory: implications from event-related timing using fMRIMichael A Kraut
Dept. of Radiology, Division of Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
J Int Neuropsychol Soc 9:1031-40. 2003..We conclude that BA6 mediates early designation or refinement of search criteria, and that the pulvinar may be involved in the binding of feature stimuli for an integrated object memory... - Neural mechanisms of semantic memoryMichael A Kraut
Department of Radiology, Division of Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
Curr Neurol Neurosci Rep 4:461-5. 2004..The pulvinar nucleus of the thalamus, in concert with ventral temporal and occipital cortical regions, become active later, perhaps when the criteria are met or the target object is identified... - Neuroanatomic organization of sound memory in humansMichael A Kraut
The Johns Hopkins University School of Medicine, USA
J Cogn Neurosci 18:1877-88. 2006..Neural regions selective for threatening sounds are similar to those of nonhuman primates, demonstrating semantic memory organization for basic biological/survival primitives are present across species... - Distinct prefrontal cortex activity associated with item memory and source memory for visual shapesScott D Slotnick
Department of Psychology, Harvard University, William James Hall, 33 Kirkland Street, Cambridge, MA 02138, USA
Brain Res Cogn Brain Res 17:75-82. 2003..Moreover, only item memory was associated with activity in the medial temporal lobes. These results confirm and extend previous findings that item memory and source memory are associated with distinct neural substrates... - Abnormal object recall and anterior cingulate overactivation correlate with formal thought disorder in schizophreniaMichal Assaf
Olin Neuropsychiatry Research Center, Institute of Living, Hartford, CT 06106, USA
Biol Psychiatry 59:452-9. 2006..An influential theory is that FTD results from impaired semantic memory processing. We explored the neural correlates of semantic memory retrieval in schizophrenia using an imaging task assessing semantic object recall... - Evidence of resilience: neuroimaging in former prisoners of warThomas Freeman
Mental Health Service, Central Arkansas Veterans Healthcare System, Little Rock, AR, USA
Psychiatry Res 146:59-64. 2006.... - The impact of pathologist experience on liver transplant biopsy interpretationCarla S Coffin
Department of Medicine, University of Calgary, Calgary, AB, Canada
Mod Pathol 19:832-8. 2006.... - Neural correlates of the object-recall process in semantic memoryMichal Assaf
Olin Neuropsychiatry Research Center, Institute of Living, Hartford, CT 06106, United States
Psychiatry Res 147:115-26. 2006..Understanding the circuit that normally mediates this process is relevant for schizophrenia, where many regions in this circuit are functionally abnormal and semantic memory is impaired... - The Semantic Object Retrieval Test (SORT) in normal aging and Alzheimer diseaseMichael A Kraut
Department of Radiology, Division of Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
Cogn Behav Neurol 19:177-84. 2006..The task detected semantic memory deficits in approximately half of patients with mild-moderate AD, which is comparable to other studies assessing semantic deficits in AD with less specific measures... - The Semantic Object Retrieval Test (SORT) in amnestic mild cognitive impairmentMichael A Kraut
Department of Radiology, Division of Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
Cogn Behav Neurol 20:62-7. 2007..Between 10% and 15% of patients with the amnestic variety of Mild Cognitive Impairment (MCI) convert to Alzheimer disease (AD) per year... - Interactions between thalamic and cortical rhythms during semantic memory recall in humanScott D Slotnick
Department of Psychology, Johns Hopkins University, Baltimore, MD 21218, USA
Proc Natl Acad Sci U S A 99:6440-3. 2002..Such a pattern of thalamocortical activity reflects a plausible neural mechanism underlying semantic memory recall that may underlie other cognitive processes as well... - Tailored cognitive testing with provocative amobarbital injection preceding AVM embolizationLauren R Moo
Department of Neurology, The Johns Hopkins Hospital, Baltimore, MD, USA
AJNR Am J Neuroradiol 23:416-21. 2002..CONCLUSION: In our experience, provocative amobarbital testing prior to AVM embolization was helpful in identifying vascular territories where embolization may lead to neurologic and cognitive deficits... - The effect of age on rate of functional recovery after intracarotid amobarbital injectionJessica B Segal
Department of Neurology, Division of Cognitive Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
Epilepsia 43:659-61. 2002..Previous studies of thiopental, a barbiturate similar to sodium amobarbital, found that age and gender significantly affect the dose required to induce anesthesia, such that younger patients require higher dosage...