Laksari, K; Wu, L C; Kurt, M; Kuo, C; Camarillo, D C
Resonance of human brain under head acceleration Journal Article
In: Journal of the Royal Society Interface, vol. 12, no. 108, pp. 20150331, 2015.
Abstract | BibTeX | Tags: *Acceleration/ae [Adverse Effects], *BRAIN, *Brain Injuries, *Craniocerebral Trauma, *MAGNETIC resonance imaging, *Skull, adult, Brain Injuries/dg [Diagnostic Imaging], Brain Injuries/pp [Physiopathology], Brain/dg [Diagnostic Imaging], Brain/pp [Physiopathology], Craniocerebral Trauma/dg [Diagnostic Imaging], Craniocerebral Trauma/pp [Physiopathology], Humans, Male, Radiography, Skull/dg [Diagnostic Imaging], Skull/pp [Physiopathology]
@article{Laksari2015,
title = {Resonance of human brain under head acceleration},
author = {Laksari, K and Wu, L C and Kurt, M and Kuo, C and Camarillo, D C},
year = {2015},
date = {2015-01-01},
journal = {Journal of the Royal Society Interface},
volume = {12},
number = {108},
pages = {20150331},
abstract = {Although safety standards have reduced fatal head trauma due to single severe head impacts, mild trauma from repeated head exposures may carry risks of long-term chronic changes in the brain's function and structure. To study the physical sensitivities of the brain to mild head impacts, we developed the first dynamic model of the skull-brain based on in vivo MRI data. We showed that the motion of the brain can be described by a rigid-body with constrained kinematics. We further demonstrated that skull-brain dynamics can be approximated by an under-damped system with a low-frequency resonance at around 15 Hz. Furthermore, from our previous field measurements, we found that head motions in a variety of activities, including contact sports, show a primary frequency of less than 20 Hz. This implies that typical head exposures may drive the brain dangerously close to its mechanical resonance and lead to amplified brain-skull relative motions. Our results suggest a possible cause for mild brain trauma, which could occur due to repetitive low-acceleration head oscillations in a variety of recreational and occupational activities. Copyright © 2015 The Author(s) Published by the Royal Society. All rights reserved.},
keywords = {*Acceleration/ae [Adverse Effects], *BRAIN, *Brain Injuries, *Craniocerebral Trauma, *MAGNETIC resonance imaging, *Skull, adult, Brain Injuries/dg [Diagnostic Imaging], Brain Injuries/pp [Physiopathology], Brain/dg [Diagnostic Imaging], Brain/pp [Physiopathology], Craniocerebral Trauma/dg [Diagnostic Imaging], Craniocerebral Trauma/pp [Physiopathology], Humans, Male, Radiography, Skull/dg [Diagnostic Imaging], Skull/pp [Physiopathology]},
pubstate = {published},
tppubtype = {article}
}
Horner, A; VanDemark, M; Jensen, G A
The challenge of assessing a patient with dementia and head injury Journal Article
In: AACN Clinical Issues, vol. 13, no. 1, pp. 73–83, 2002.
Abstract | BibTeX | Tags: *Craniocerebral Trauma/co [Complications], *Dementia/co [Complications], Accidental Falls, Accidents, aged, Alzheimer Disease/di [Diagnosis], Brain Concussion/di [Diagnosis], Brain Concussion/et [Etiology], Brain Concussion/pp [Physiopathology], Craniocerebral Trauma/di [Diagnosis], Craniocerebral Trauma/pp [Physiopathology], Delirium/di [Diagnosis], Delirium/et [Etiology], Home, Humans
@article{Horner2002,
title = {The challenge of assessing a patient with dementia and head injury},
author = {Horner, A and VanDemark, M and Jensen, G A},
year = {2002},
date = {2002-01-01},
journal = {AACN Clinical Issues},
volume = {13},
number = {1},
pages = {73--83},
abstract = {Alzheimer's disease is emerging as a major health challenge for the 21st century. The reported case study discusses a 74-year-old woman with dementia of the Alzheimer type who sustained a head injury when she fell down the basement stairs. Differentiating the head injury from the preexisting dementia was complicated and required creative and astute assessment. Objective assessment tools discussed include the Mini-Mental State Examination, a delirium guide, and the Tinetti assessment tool. Predisposition to delirium is significant because of the comorbidities associated with cognitive impairment and head injury. Interventions to prevent delirium are recommended.},
keywords = {*Craniocerebral Trauma/co [Complications], *Dementia/co [Complications], Accidental Falls, Accidents, aged, Alzheimer Disease/di [Diagnosis], Brain Concussion/di [Diagnosis], Brain Concussion/et [Etiology], Brain Concussion/pp [Physiopathology], Craniocerebral Trauma/di [Diagnosis], Craniocerebral Trauma/pp [Physiopathology], Delirium/di [Diagnosis], Delirium/et [Etiology], Home, Humans},
pubstate = {published},
tppubtype = {article}
}
Laksari, K; Wu, L C; Kurt, M; Kuo, C; Camarillo, D C
Resonance of human brain under head acceleration Journal Article
In: Journal of the Royal Society Interface, vol. 12, no. 108, pp. 20150331, 2015.
@article{Laksari2015,
title = {Resonance of human brain under head acceleration},
author = {Laksari, K and Wu, L C and Kurt, M and Kuo, C and Camarillo, D C},
year = {2015},
date = {2015-01-01},
journal = {Journal of the Royal Society Interface},
volume = {12},
number = {108},
pages = {20150331},
abstract = {Although safety standards have reduced fatal head trauma due to single severe head impacts, mild trauma from repeated head exposures may carry risks of long-term chronic changes in the brain's function and structure. To study the physical sensitivities of the brain to mild head impacts, we developed the first dynamic model of the skull-brain based on in vivo MRI data. We showed that the motion of the brain can be described by a rigid-body with constrained kinematics. We further demonstrated that skull-brain dynamics can be approximated by an under-damped system with a low-frequency resonance at around 15 Hz. Furthermore, from our previous field measurements, we found that head motions in a variety of activities, including contact sports, show a primary frequency of less than 20 Hz. This implies that typical head exposures may drive the brain dangerously close to its mechanical resonance and lead to amplified brain-skull relative motions. Our results suggest a possible cause for mild brain trauma, which could occur due to repetitive low-acceleration head oscillations in a variety of recreational and occupational activities. Copyright © 2015 The Author(s) Published by the Royal Society. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Horner, A; VanDemark, M; Jensen, G A
The challenge of assessing a patient with dementia and head injury Journal Article
In: AACN Clinical Issues, vol. 13, no. 1, pp. 73–83, 2002.
@article{Horner2002,
title = {The challenge of assessing a patient with dementia and head injury},
author = {Horner, A and VanDemark, M and Jensen, G A},
year = {2002},
date = {2002-01-01},
journal = {AACN Clinical Issues},
volume = {13},
number = {1},
pages = {73--83},
abstract = {Alzheimer's disease is emerging as a major health challenge for the 21st century. The reported case study discusses a 74-year-old woman with dementia of the Alzheimer type who sustained a head injury when she fell down the basement stairs. Differentiating the head injury from the preexisting dementia was complicated and required creative and astute assessment. Objective assessment tools discussed include the Mini-Mental State Examination, a delirium guide, and the Tinetti assessment tool. Predisposition to delirium is significant because of the comorbidities associated with cognitive impairment and head injury. Interventions to prevent delirium are recommended.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Laksari, K; Wu, L C; Kurt, M; Kuo, C; Camarillo, D C
Resonance of human brain under head acceleration Journal Article
In: Journal of the Royal Society Interface, vol. 12, no. 108, pp. 20150331, 2015.
Abstract | BibTeX | Tags: *Acceleration/ae [Adverse Effects], *BRAIN, *Brain Injuries, *Craniocerebral Trauma, *MAGNETIC resonance imaging, *Skull, adult, Brain Injuries/dg [Diagnostic Imaging], Brain Injuries/pp [Physiopathology], Brain/dg [Diagnostic Imaging], Brain/pp [Physiopathology], Craniocerebral Trauma/dg [Diagnostic Imaging], Craniocerebral Trauma/pp [Physiopathology], Humans, Male, Radiography, Skull/dg [Diagnostic Imaging], Skull/pp [Physiopathology]
@article{Laksari2015,
title = {Resonance of human brain under head acceleration},
author = {Laksari, K and Wu, L C and Kurt, M and Kuo, C and Camarillo, D C},
year = {2015},
date = {2015-01-01},
journal = {Journal of the Royal Society Interface},
volume = {12},
number = {108},
pages = {20150331},
abstract = {Although safety standards have reduced fatal head trauma due to single severe head impacts, mild trauma from repeated head exposures may carry risks of long-term chronic changes in the brain's function and structure. To study the physical sensitivities of the brain to mild head impacts, we developed the first dynamic model of the skull-brain based on in vivo MRI data. We showed that the motion of the brain can be described by a rigid-body with constrained kinematics. We further demonstrated that skull-brain dynamics can be approximated by an under-damped system with a low-frequency resonance at around 15 Hz. Furthermore, from our previous field measurements, we found that head motions in a variety of activities, including contact sports, show a primary frequency of less than 20 Hz. This implies that typical head exposures may drive the brain dangerously close to its mechanical resonance and lead to amplified brain-skull relative motions. Our results suggest a possible cause for mild brain trauma, which could occur due to repetitive low-acceleration head oscillations in a variety of recreational and occupational activities. Copyright © 2015 The Author(s) Published by the Royal Society. All rights reserved.},
keywords = {*Acceleration/ae [Adverse Effects], *BRAIN, *Brain Injuries, *Craniocerebral Trauma, *MAGNETIC resonance imaging, *Skull, adult, Brain Injuries/dg [Diagnostic Imaging], Brain Injuries/pp [Physiopathology], Brain/dg [Diagnostic Imaging], Brain/pp [Physiopathology], Craniocerebral Trauma/dg [Diagnostic Imaging], Craniocerebral Trauma/pp [Physiopathology], Humans, Male, Radiography, Skull/dg [Diagnostic Imaging], Skull/pp [Physiopathology]},
pubstate = {published},
tppubtype = {article}
}
Horner, A; VanDemark, M; Jensen, G A
The challenge of assessing a patient with dementia and head injury Journal Article
In: AACN Clinical Issues, vol. 13, no. 1, pp. 73–83, 2002.
Abstract | BibTeX | Tags: *Craniocerebral Trauma/co [Complications], *Dementia/co [Complications], Accidental Falls, Accidents, aged, Alzheimer Disease/di [Diagnosis], Brain Concussion/di [Diagnosis], Brain Concussion/et [Etiology], Brain Concussion/pp [Physiopathology], Craniocerebral Trauma/di [Diagnosis], Craniocerebral Trauma/pp [Physiopathology], Delirium/di [Diagnosis], Delirium/et [Etiology], Home, Humans
@article{Horner2002,
title = {The challenge of assessing a patient with dementia and head injury},
author = {Horner, A and VanDemark, M and Jensen, G A},
year = {2002},
date = {2002-01-01},
journal = {AACN Clinical Issues},
volume = {13},
number = {1},
pages = {73--83},
abstract = {Alzheimer's disease is emerging as a major health challenge for the 21st century. The reported case study discusses a 74-year-old woman with dementia of the Alzheimer type who sustained a head injury when she fell down the basement stairs. Differentiating the head injury from the preexisting dementia was complicated and required creative and astute assessment. Objective assessment tools discussed include the Mini-Mental State Examination, a delirium guide, and the Tinetti assessment tool. Predisposition to delirium is significant because of the comorbidities associated with cognitive impairment and head injury. Interventions to prevent delirium are recommended.},
keywords = {*Craniocerebral Trauma/co [Complications], *Dementia/co [Complications], Accidental Falls, Accidents, aged, Alzheimer Disease/di [Diagnosis], Brain Concussion/di [Diagnosis], Brain Concussion/et [Etiology], Brain Concussion/pp [Physiopathology], Craniocerebral Trauma/di [Diagnosis], Craniocerebral Trauma/pp [Physiopathology], Delirium/di [Diagnosis], Delirium/et [Etiology], Home, Humans},
pubstate = {published},
tppubtype = {article}
}