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Related Concept Videos

Strategies for Assessing and Addressing Confounding01:25

Strategies for Assessing and Addressing Confounding

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Confounding is a critical issue in epidemiological studies, often leading to misleading conclusions about associations between exposures and outcomes. It occurs when the relationship between the exposure and the outcome is mixed with the effects of other factors that influence the outcome. Given that, addressing confounding is of high importance for drawing accurate inferences in research.
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
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Related Experiment Video

Updated: Apr 12, 2026

The Use of Pharmacological-challenge fMRI in Pre-clinical Research: Application to the 5-HT System
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phMRI: methodological considerations for mitigating potential confounding factors.

Julius H Bourke1, Matthew B Wall2

  • 1Centre for Psychiatry, The London School of Medicine and Dentistry, Wolfson Barts Institute for Preventive Medicine, Queen Mary University of London London, UK.

Frontiers in Neuroscience
|May 23, 2015
PubMed
Summary
This summary is machine-generated.

Pharmacological Magnetic Resonance Imaging (phMRI) offers insights into drug effects and neuroscience. Methodological strategies can overcome challenges in phMRI study design, data interpretation, and clinical applications.

Keywords:
cognitive neurosciencemethodologyneurosciencephMRIpharmaco fMRIpharmocological MRIphfMRIpsychopharmacology

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Medical Imaging

Background:

  • Conventional Magnetic Resonance Imaging (MRI) is enhanced by pharmacological manipulations in pharmacological MRI (phMRI).
  • phMRI enables the study of drug effects and the use of pharmacological probes for neuroscience research.

Purpose of the Study:

  • To discuss issues that may confound the interpretation of phMRI study results.
  • To describe methodological strategies for mitigating these confounding issues in phMRI research.
  • To highlight techniques suitable for clinical populations within phMRI studies.

Main Methods:

  • Review and discussion of potential confounding factors in phMRI studies.
  • Description of methodological strategies applicable across all investigation stages: study design, data acquisition, and interpretation.
  • Inclusion of specialized techniques for phMRI research involving clinical populations.

Main Results:

  • Identification of key challenges and confounding factors in phMRI research.
  • Presentation of a comprehensive set of strategies to enhance the reliability and validity of phMRI findings.
  • Demonstration that careful consideration and application of these strategies can overcome significant obstacles.

Conclusions:

  • Pharmacological MRI is a powerful but challenging research area.
  • Implementing proposed methodological strategies is crucial for overcoming obstacles.
  • phMRI, when conducted rigorously, offers significant advantages for neuroscience and clinical applications.