Lachapelle, Julie; Bolduc-Teasdale, Julie; Ptito, Alain; McKerral, Michelle
Deficits in complex visual information processing after mild TBI: Electrophysiological markers and vocational outcome prognosis Journal Article
In: Brain Injury, vol. 22, no. 3, pp. 265–274, 2008, ISBN: 0269-9052 1362-301X.
Abstract | Links | BibTeX | Tags: 2008, Cognitive Processes, electrophysiological markers, Electrophysiology, information processing, Injuries, mild traumatic brain injury, Prognosis, Severity (Disorders), traumatic brain injury, visual information, Visual Perception, Vocational Evaluation, vocational outcomes
@article{Lachapelle2008,
title = {Deficits in complex visual information processing after mild TBI: Electrophysiological markers and vocational outcome prognosis},
author = {Lachapelle, Julie and Bolduc-Teasdale, Julie and Ptito, Alain and McKerral, Michelle},
doi = {10.1080/02699050801938983},
isbn = {0269-9052
1362-301X},
year = {2008},
date = {2008-01-01},
journal = {Brain Injury},
volume = {22},
number = {3},
pages = {265--274},
publisher = {Informa Healthcare},
address = {US},
abstract = {Primary objective: To evaluate low-level to complex information processing using visual electrophysiology and to examine the latter's prognostic value in regards to vocational outcome in persons having sustained a mild traumatic brain injury (mTBI). Research design/methods: Event-related potentials (ERPs) were recorded to pattern-reversal, simple motion, texture segregation and cognitive oddball paradigms from 17 participants with symptomatic mTBI at onset of specialized clinical intervention and from 15 normal controls. The relationship between abnormal electrophysiology and post-intervention return to work status was also examined. Main outcomes and results: Participants with mTBI showed a statistically significant (p \< .05) amplitude reduction for cognitive ERPs and delayed latencies for texture (p \< .05) and cognitive paradigms (p \< .005) compared to controls. Furthermore, participants with mTBI presenting texture or cognitive ERP latency delays upon admission were at significantly (p \< .01) greater risk of negative vocational outcome than mTBI participants with normal electrophysiology. Conclusions: The findings suggest that individuals with symptomatic mTBI can present selective deficits in complex visual information processing that could interfere with vocational outcome. ERP paradigms such as those employed in this study thus show potential for evaluating outcome prognosis and merit further study. (PsycINFO Database Record (c) 2016 APA, all rights reserved)},
keywords = {2008, Cognitive Processes, electrophysiological markers, Electrophysiology, information processing, Injuries, mild traumatic brain injury, Prognosis, Severity (Disorders), traumatic brain injury, visual information, Visual Perception, Vocational Evaluation, vocational outcomes},
pubstate = {published},
tppubtype = {article}
}
Shum, David H; McFarland, Ken; Bain, John D; Humphreys, Michael S
Effects of closed-head injury on attentional processes: An information-processing stage analysis Journal Article
In: Journal of Clinical and Experimental Neuropsychology, vol. 12, no. 2, pp. 247–264, 1990, ISBN: 1380-3395 1744-411X.
Abstract | Links | BibTeX | Tags: 17–45 yr olds with closed head injuries, 1990, attention, Cognitive Processes, feature extraction & identification & response sel, Head Injuries
@article{Shum1990,
title = {Effects of closed-head injury on attentional processes: An information-processing stage analysis},
author = {Shum, David H and McFarland, Ken and Bain, John D and Humphreys, Michael S},
doi = {10.1080/01688639008400971},
isbn = {1380-3395
1744-411X},
year = {1990},
date = {1990-01-01},
journal = {Journal of Clinical and Experimental Neuropsychology},
volume = {12},
number = {2},
pages = {247--264},
publisher = {Taylor \& Francis},
address = {United Kingdom},
abstract = {Two experiments, based on S. Sternberg's (see record [rid]1970-11748-001[/rid]) additive-factor method, examined attentional processes in terms of 4 information-processing stages: feature extraction, identification (ID), response selection (RS), and motor adjustment. A visuospatial reaction time (RT) task was undertaken by 16 university students (aged 17\textendash39 yrs) and 24 closed-head-injured (CI) patients (aged 17\textendash45 yrs), who were divided into groups (severe short-, severe long-, and mild short-term) based on severity of and time since injury. 17 normal controls, matched to CI Ss on age, sex, and education, also participated. CI Ss and normals exhibited a similar mode of linear information processing. Also, severe short-term CI Ss were impaired on ID, RS, and response execution. Severe long-term CI Ss were impaired on RS and response execution. There were no impairments for mild short-term CI Ss.},
keywords = {17\textendash45 yr olds with closed head injuries, 1990, attention, Cognitive Processes, feature extraction \& identification \& response sel, Head Injuries},
pubstate = {published},
tppubtype = {article}
}
Lachapelle, Julie; Bolduc-Teasdale, Julie; Ptito, Alain; McKerral, Michelle
Deficits in complex visual information processing after mild TBI: Electrophysiological markers and vocational outcome prognosis Journal Article
In: Brain Injury, vol. 22, no. 3, pp. 265–274, 2008, ISBN: 0269-9052 1362-301X.
@article{Lachapelle2008,
title = {Deficits in complex visual information processing after mild TBI: Electrophysiological markers and vocational outcome prognosis},
author = {Lachapelle, Julie and Bolduc-Teasdale, Julie and Ptito, Alain and McKerral, Michelle},
doi = {10.1080/02699050801938983},
isbn = {0269-9052
1362-301X},
year = {2008},
date = {2008-01-01},
journal = {Brain Injury},
volume = {22},
number = {3},
pages = {265--274},
publisher = {Informa Healthcare},
address = {US},
abstract = {Primary objective: To evaluate low-level to complex information processing using visual electrophysiology and to examine the latter's prognostic value in regards to vocational outcome in persons having sustained a mild traumatic brain injury (mTBI). Research design/methods: Event-related potentials (ERPs) were recorded to pattern-reversal, simple motion, texture segregation and cognitive oddball paradigms from 17 participants with symptomatic mTBI at onset of specialized clinical intervention and from 15 normal controls. The relationship between abnormal electrophysiology and post-intervention return to work status was also examined. Main outcomes and results: Participants with mTBI showed a statistically significant (p \< .05) amplitude reduction for cognitive ERPs and delayed latencies for texture (p \< .05) and cognitive paradigms (p \< .005) compared to controls. Furthermore, participants with mTBI presenting texture or cognitive ERP latency delays upon admission were at significantly (p \< .01) greater risk of negative vocational outcome than mTBI participants with normal electrophysiology. Conclusions: The findings suggest that individuals with symptomatic mTBI can present selective deficits in complex visual information processing that could interfere with vocational outcome. ERP paradigms such as those employed in this study thus show potential for evaluating outcome prognosis and merit further study. (PsycINFO Database Record (c) 2016 APA, all rights reserved)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Shum, David H; McFarland, Ken; Bain, John D; Humphreys, Michael S
Effects of closed-head injury on attentional processes: An information-processing stage analysis Journal Article
In: Journal of Clinical and Experimental Neuropsychology, vol. 12, no. 2, pp. 247–264, 1990, ISBN: 1380-3395 1744-411X.
@article{Shum1990,
title = {Effects of closed-head injury on attentional processes: An information-processing stage analysis},
author = {Shum, David H and McFarland, Ken and Bain, John D and Humphreys, Michael S},
doi = {10.1080/01688639008400971},
isbn = {1380-3395
1744-411X},
year = {1990},
date = {1990-01-01},
journal = {Journal of Clinical and Experimental Neuropsychology},
volume = {12},
number = {2},
pages = {247--264},
publisher = {Taylor \& Francis},
address = {United Kingdom},
abstract = {Two experiments, based on S. Sternberg's (see record [rid]1970-11748-001[/rid]) additive-factor method, examined attentional processes in terms of 4 information-processing stages: feature extraction, identification (ID), response selection (RS), and motor adjustment. A visuospatial reaction time (RT) task was undertaken by 16 university students (aged 17\textendash39 yrs) and 24 closed-head-injured (CI) patients (aged 17\textendash45 yrs), who were divided into groups (severe short-, severe long-, and mild short-term) based on severity of and time since injury. 17 normal controls, matched to CI Ss on age, sex, and education, also participated. CI Ss and normals exhibited a similar mode of linear information processing. Also, severe short-term CI Ss were impaired on ID, RS, and response execution. Severe long-term CI Ss were impaired on RS and response execution. There were no impairments for mild short-term CI Ss.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Lachapelle, Julie; Bolduc-Teasdale, Julie; Ptito, Alain; McKerral, Michelle
Deficits in complex visual information processing after mild TBI: Electrophysiological markers and vocational outcome prognosis Journal Article
In: Brain Injury, vol. 22, no. 3, pp. 265–274, 2008, ISBN: 0269-9052 1362-301X.
Abstract | Links | BibTeX | Tags: 2008, Cognitive Processes, electrophysiological markers, Electrophysiology, information processing, Injuries, mild traumatic brain injury, Prognosis, Severity (Disorders), traumatic brain injury, visual information, Visual Perception, Vocational Evaluation, vocational outcomes
@article{Lachapelle2008,
title = {Deficits in complex visual information processing after mild TBI: Electrophysiological markers and vocational outcome prognosis},
author = {Lachapelle, Julie and Bolduc-Teasdale, Julie and Ptito, Alain and McKerral, Michelle},
doi = {10.1080/02699050801938983},
isbn = {0269-9052
1362-301X},
year = {2008},
date = {2008-01-01},
journal = {Brain Injury},
volume = {22},
number = {3},
pages = {265--274},
publisher = {Informa Healthcare},
address = {US},
abstract = {Primary objective: To evaluate low-level to complex information processing using visual electrophysiology and to examine the latter's prognostic value in regards to vocational outcome in persons having sustained a mild traumatic brain injury (mTBI). Research design/methods: Event-related potentials (ERPs) were recorded to pattern-reversal, simple motion, texture segregation and cognitive oddball paradigms from 17 participants with symptomatic mTBI at onset of specialized clinical intervention and from 15 normal controls. The relationship between abnormal electrophysiology and post-intervention return to work status was also examined. Main outcomes and results: Participants with mTBI showed a statistically significant (p \< .05) amplitude reduction for cognitive ERPs and delayed latencies for texture (p \< .05) and cognitive paradigms (p \< .005) compared to controls. Furthermore, participants with mTBI presenting texture or cognitive ERP latency delays upon admission were at significantly (p \< .01) greater risk of negative vocational outcome than mTBI participants with normal electrophysiology. Conclusions: The findings suggest that individuals with symptomatic mTBI can present selective deficits in complex visual information processing that could interfere with vocational outcome. ERP paradigms such as those employed in this study thus show potential for evaluating outcome prognosis and merit further study. (PsycINFO Database Record (c) 2016 APA, all rights reserved)},
keywords = {2008, Cognitive Processes, electrophysiological markers, Electrophysiology, information processing, Injuries, mild traumatic brain injury, Prognosis, Severity (Disorders), traumatic brain injury, visual information, Visual Perception, Vocational Evaluation, vocational outcomes},
pubstate = {published},
tppubtype = {article}
}
Shum, David H; McFarland, Ken; Bain, John D; Humphreys, Michael S
Effects of closed-head injury on attentional processes: An information-processing stage analysis Journal Article
In: Journal of Clinical and Experimental Neuropsychology, vol. 12, no. 2, pp. 247–264, 1990, ISBN: 1380-3395 1744-411X.
Abstract | Links | BibTeX | Tags: 17–45 yr olds with closed head injuries, 1990, attention, Cognitive Processes, feature extraction & identification & response sel, Head Injuries
@article{Shum1990,
title = {Effects of closed-head injury on attentional processes: An information-processing stage analysis},
author = {Shum, David H and McFarland, Ken and Bain, John D and Humphreys, Michael S},
doi = {10.1080/01688639008400971},
isbn = {1380-3395
1744-411X},
year = {1990},
date = {1990-01-01},
journal = {Journal of Clinical and Experimental Neuropsychology},
volume = {12},
number = {2},
pages = {247--264},
publisher = {Taylor \& Francis},
address = {United Kingdom},
abstract = {Two experiments, based on S. Sternberg's (see record [rid]1970-11748-001[/rid]) additive-factor method, examined attentional processes in terms of 4 information-processing stages: feature extraction, identification (ID), response selection (RS), and motor adjustment. A visuospatial reaction time (RT) task was undertaken by 16 university students (aged 17\textendash39 yrs) and 24 closed-head-injured (CI) patients (aged 17\textendash45 yrs), who were divided into groups (severe short-, severe long-, and mild short-term) based on severity of and time since injury. 17 normal controls, matched to CI Ss on age, sex, and education, also participated. CI Ss and normals exhibited a similar mode of linear information processing. Also, severe short-term CI Ss were impaired on ID, RS, and response execution. Severe long-term CI Ss were impaired on RS and response execution. There were no impairments for mild short-term CI Ss.},
keywords = {17\textendash45 yr olds with closed head injuries, 1990, attention, Cognitive Processes, feature extraction \& identification \& response sel, Head Injuries},
pubstate = {published},
tppubtype = {article}
}