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Lateralized frontal blood flow increases during fluency tasks : influence of cognitive strategy

Elfgren, C I LU and Risberg, J LU (1998) In Neuropsychologia 36(6). p.12-505
Abstract

Difficulties with verbal fluency tasks (VFIT) have been shown mainly to be associated with left frontal lobe pathology in lesion studies. The design fluency test (DFT) is a non-verbal analogue of word fluency tasks and has, in patients with right frontal lobe pathology, been coupled to an inability to perform well. Regional cerebral blood flow measurements (rCBF) were made in normals to elucidate the involvement of frontal and frontotemporal brain regions during the performance of VFT and DFT. In addition, the subjects' reports were used for obtaining information about the cognitive strategy used when solving the tasks. The results confirm previous CBF findings showing a mainly left-sided frontal activation during the VFT. During the... (More)

Difficulties with verbal fluency tasks (VFIT) have been shown mainly to be associated with left frontal lobe pathology in lesion studies. The design fluency test (DFT) is a non-verbal analogue of word fluency tasks and has, in patients with right frontal lobe pathology, been coupled to an inability to perform well. Regional cerebral blood flow measurements (rCBF) were made in normals to elucidate the involvement of frontal and frontotemporal brain regions during the performance of VFT and DFT. In addition, the subjects' reports were used for obtaining information about the cognitive strategy used when solving the tasks. The results confirm previous CBF findings showing a mainly left-sided frontal activation during the VFT. During the DFT significant flow augmentations were seen in both frontal lobes compared to baseline. Furthermore, the use of different strategies was reflected in different patterns of brain activation. Our results support the proposal that the left frontal cortical area is engaged in the generation of internally driven responses. Furthermore, we argue that the cortical areas engaged during the execution of these tasks may reflect differences in cognitive strategy.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Adult, Brain, Cognition, Female, Functional Laterality, Humans, Male, Neuropsychological Tests, Regional Blood Flow, Temporal Lobe, Verbal Behavior, Xenon Radioisotopes, Journal Article, Research Support, Non-U.S. Gov't
in
Neuropsychologia
volume
36
issue
6
pages
12 - 505
publisher
Elsevier
external identifiers
  • Scopus:0032104491
ISSN
0028-3932
DOI
10.1016/S0028-3932(97)00146-2
language
English
LU publication?
yes
id
ee4108d1-1e31-4162-81c2-85205513c79f
date added to LUP
2016-10-29 16:07:03
date last changed
2016-11-29 09:44:54
@misc{ee4108d1-1e31-4162-81c2-85205513c79f,
  abstract     = {<p>Difficulties with verbal fluency tasks (VFIT) have been shown mainly to be associated with left frontal lobe pathology in lesion studies. The design fluency test (DFT) is a non-verbal analogue of word fluency tasks and has, in patients with right frontal lobe pathology, been coupled to an inability to perform well. Regional cerebral blood flow measurements (rCBF) were made in normals to elucidate the involvement of frontal and frontotemporal brain regions during the performance of VFT and DFT. In addition, the subjects' reports were used for obtaining information about the cognitive strategy used when solving the tasks. The results confirm previous CBF findings showing a mainly left-sided frontal activation during the VFT. During the DFT significant flow augmentations were seen in both frontal lobes compared to baseline. Furthermore, the use of different strategies was reflected in different patterns of brain activation. Our results support the proposal that the left frontal cortical area is engaged in the generation of internally driven responses. Furthermore, we argue that the cortical areas engaged during the execution of these tasks may reflect differences in cognitive strategy.</p>},
  author       = {Elfgren, C I and Risberg, J},
  issn         = {0028-3932},
  keyword      = {Adult,Brain,Cognition,Female,Functional Laterality,Humans,Male,Neuropsychological Tests,Regional Blood Flow,Temporal Lobe,Verbal Behavior,Xenon Radioisotopes,Journal Article,Research Support, Non-U.S. Gov't},
  language     = {eng},
  number       = {6},
  pages        = {12--505},
  publisher    = {ARRAY(0xa54aa40)},
  series       = {Neuropsychologia},
  title        = {Lateralized frontal blood flow increases during fluency tasks : influence of cognitive strategy},
  url          = {http://dx.doi.org/10.1016/S0028-3932(97)00146-2},
  volume       = {36},
  year         = {1998},
}