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If neuroimaging is the answer, what is the question?

S M Kosslyn1

  • 1Harvard University, Cambridge, MA 02138, USA. smk@wjh.harvard.edu

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|August 31, 1999
PubMed
Summary

Understanding mental processes requires targeted questions for neuroimaging techniques like positron emission tomography (PET) and functional magnetic resonance imaging (fMRI). This approach enhances insights into brain function and information processing.

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging Techniques

Background:

  • Current understanding of mental processes through neuroimaging is limited by passive observation of neural activity.
  • A more effective approach involves designing tasks informed by specific research questions tailored to neuroimaging strengths.

Purpose of the Study:

  • To propose a taxonomy of research questions suitable for neuroimaging techniques.
  • To illustrate how these questions can elucidate information processing in the brain.
  • To highlight the importance of integrating neuroimaging with behavioral studies.

Main Methods:

  • Development of a question taxonomy for neuroimaging.
  • Categorization of questions into those addressing 'how' information processing is implemented and 'when' processes/structures are invoked.

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  • Experimental illustration using visual cognition studies.

    • Main Results:

    • The proposed taxonomy facilitates targeted investigations into brain function.
    • Neuroimaging can reveal implementation details of information processing and temporal dynamics of neural activity.
    • Caveats in inferential logic for neuroimaging are identified.

    Conclusions:

    • A question-driven approach optimizes the use of neuroimaging for understanding mental processes.
    • Neuroimaging, when guided by specific questions, can reveal how and when cognitive functions are implemented.
    • Behavioral studies are crucial for validating and contextualizing neuroimaging findings.