TY - JOUR
T1 - Cerebrovascular function and cognition in childhood
T2 - a systematic review of transcranial doppler studies
AU - Bakker, Mireille J.
AU - Hofmann, Jessica
AU - Churches, Owen F.
AU - Badcock, Nicholas A.
AU - Kohler, Mark
AU - Keage, Hannah A D
N1 - This version is archived for private and non-commercial use under the terms of this BioMed Central open access license ("license") (see http://www.biomedcentral.com/about/license). The work is protected by copyright and/or other applicable law. Any use of the work other than as authorized under this license is prohibited. For further rights please check the terms of the license, or contact the publisher.
PY - 2014/3/6
Y1 - 2014/3/6
N2 - Background:The contribution of cerebrovascular function to cognitive performance is gaining increased attention. Transcranial doppler (TCD) is portable, reliable, inexpensive and extremely well tolerated by young and clinical samples. It enables measurement of blood flow velocity in major cerebral arteries at rest and during cognitive tasks.Methods:We systematically reviewed evidence for associations between cognitive performance and cerebrovascular function in children (0-18 years), as measured using TCD. A total of 2778 articles were retrieved from PsychInfo, Pubmed, and EMBASE searches and 25 relevant articles were identified.Results:Most studies investigated clinical groups, where decreased blood flow velocities in infants were associated with poor neurological functioning, and increased blood flow velocities in children with Sickle cell disease were typically associated with cognitive impairment and lower intelligence. Studies were also identified assessing autistic behaviour, mental retardation and sleep disordered breathing. In healthy children, the majority of studies reported cognitive processing produced lateralised changes in blood flow velocities however these physiological responses did not appear to correlate with behavioural cognitive performance.Conclusion:Poor cognitive performance appears to be associated with decreased blood flow velocities in premature infants, and increased velocities in Sickle cell disease children using TCD methods. However knowledge in healthy samples is relatively limited. The technique is well tolerated by children, is portable and inexpensive. It therefore stands to make a valuable contribution to knowledge regarding the underlying functional biology of cognitive performance in childhood.
AB - Background:The contribution of cerebrovascular function to cognitive performance is gaining increased attention. Transcranial doppler (TCD) is portable, reliable, inexpensive and extremely well tolerated by young and clinical samples. It enables measurement of blood flow velocity in major cerebral arteries at rest and during cognitive tasks.Methods:We systematically reviewed evidence for associations between cognitive performance and cerebrovascular function in children (0-18 years), as measured using TCD. A total of 2778 articles were retrieved from PsychInfo, Pubmed, and EMBASE searches and 25 relevant articles were identified.Results:Most studies investigated clinical groups, where decreased blood flow velocities in infants were associated with poor neurological functioning, and increased blood flow velocities in children with Sickle cell disease were typically associated with cognitive impairment and lower intelligence. Studies were also identified assessing autistic behaviour, mental retardation and sleep disordered breathing. In healthy children, the majority of studies reported cognitive processing produced lateralised changes in blood flow velocities however these physiological responses did not appear to correlate with behavioural cognitive performance.Conclusion:Poor cognitive performance appears to be associated with decreased blood flow velocities in premature infants, and increased velocities in Sickle cell disease children using TCD methods. However knowledge in healthy samples is relatively limited. The technique is well tolerated by children, is portable and inexpensive. It therefore stands to make a valuable contribution to knowledge regarding the underlying functional biology of cognitive performance in childhood.
UR - http://www.scopus.com/inward/record.url?scp=84897497696&partnerID=8YFLogxK
U2 - 10.1186/1471-2377-14-43
DO - 10.1186/1471-2377-14-43
M3 - Article
C2 - 24602446
AN - SCOPUS:84897497696
SN - 1471-2377
VL - 14
SP - 1
EP - 12
JO - BMC Neurology
JF - BMC Neurology
M1 - 43
ER -