Evidence map›Paper›PMID 35219121›Full record

ArticleCortex; a journal devoted to the study of the nervous system and behavior2022

Limits of decoding mental states with fMRI.

Rami Jabakhanji, Andrew D Vigotsky, Jannis Bielefeld, Lejian Huang, Marwan N Baliki, Giandomenico Iannetti, A Vania Apkarian

Abstract read
In one paragraph

Article in Cortex; a journal devoted to the study of the nervous system and behavior, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. How our understanding of memory replay evolves.Journal of neurophysiology · 2023
    Review
  10. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Rami JabakhanjiDepartment of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, USA; Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, USA.
Andrew D VigotskyDepartments of Biomedical Engineering and Statistics, Northwestern University, Evanston, USA; Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, USA.
Jannis BielefeldDepartment of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, USA; Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, USA.
Lejian HuangDepartment of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, USA; Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, USA.
Marwan N BalikiDepartment of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, USA; Shirley Ryan AbilityLab, Chicago, USA; Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, USA.
Giandomenico IannettiDivision of Biosciences, University College London, London, UK; Neuroscience and Behaviour Laboratory, Italian Institute of Technology, Rome, Italy.
A Vania ApkarianDepartment of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, USA; Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, USA; Department of Anesthesiology, Feinberg School of Medicine, Northwestern University, Chicago, USA; Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, USA. Electronic address: a-apkarian@northwestern.edu.

Funding

Rodent Behavior CoreP50DA044121 · NIDA · NORTHWESTERN UNIVERSITY AT CHICAGO · PI APKARIAN, APKAR VANIA · 2018 to 2022
$9.0M
NIDA NIH HHS P50 DA044121
6 · The paper itself

Abstract

A growing number of studies claim to decode mental states using multi-voxel decoders of brain activity. It has been proposed that the fixed, fine-grained, multi-voxel patterns in these decoders are necessary for discriminating between and identifying mental states. Here, we present evidence that the efficacy of these decoders might be overstated. Across various tasks, decoder patterns were spatially imprecise, as decoder performance was unaffected by spatial smoothing; 90% redundant, as selecting a random 10% of a decoder's constituent voxels recovered full decoder performance; and performed similarly to brain activity maps used as decoders. We distinguish decoder performance in discriminating between mental states from performance in identifying a given mental state, and show that even when discrimination performance is adequate, identification can be poor. Finally, we demonstrate that simple and intuitive similarity metrics explain 91% and 62% of discrimination performance within- and across-subjects, respectively. These findings indicate that currently used across-subject decoders of mental states are superfluous and inappropriate for decision-making.

Indexed as

Brain MappingMagnetic Resonance ImagingHumansCognitive neuroscienceDecodingMental statesMultivoxel pattern analysis

Identifiers

PMID35219121
PMCPMC9238276

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.