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Neuroimaging of the periaqueductal gray: state of the field.

Abstract：

:This review and meta-analysis aims at summarizing and integrating the human neuroimaging studies that report periaqueductal gray (PAG) involvement; 250 original manuscripts on human neuroimaging of the PAG were identified. A narrative review and meta-analysis using activation likelihood estimates is included. Behaviors covered include pain and pain modulation, anxiety, bladder and bowel function and autonomic regulation. Methods include structural and functional magnetic resonance imaging, functional connectivity measures, diffusion weighted imaging and positron emission tomography. Human neuroimaging studies in healthy and clinical populations largely confirm the animal literature indicating that the PAG is involved in homeostatic regulation of salient functions such as pain, anxiety and autonomic function. Methodological concerns in the current literature, including resolution constraints, imaging artifacts and imprecise neuroanatomical labeling are discussed, and future directions are proposed. A general conclusion is that PAG neuroimaging is a field with enormous potential to translate animal data onto human behaviors, but with some growing pains that can and need to be addressed in order to add to our understanding of the neurobiology of this key region.

journal_name

Neuroimage

journal_title

NeuroImage

authors

Linnman C,Moulton EA,Barmettler G,Becerra L,Borsook D

doi

10.1016/j.neuroimage.2011.11.095

subject

Has Abstract

pub_date

2012-03-01 00:00:00

pages

505-22

issue

1

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(11)01400-5

journal_volume

60

pub_type

杂志文章,meta分析,评审

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