Evidence map›Paper›PMID 30416231›Full record

ArticleJournal of the American Statistical Association2018

Modeling motor learning using heteroskedastic functional principal components analysis.

Daniel Backenroth, Jeff Goldsmith, Michelle D Harran, Juan C Cortes, John W Krakauer, Tomoko Kitago

Abstract read
In one paragraph

Article in Journal of the American Statistical Association, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–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

6 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Observational
  5. Review
  6. Article
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

6 authors.

Daniel BackenrothDepartment of Biostatistics, Mailman School of Public Health, Columbia University.
Jeff GoldsmithDepartment of Biostatistics, Mailman School of Public Health, Columbia University.
Michelle D HarranDepartment of Neurology, Columbia University Medical Center.
Juan C CortesDepartment of Neurology, Columbia University Medical Center.
John W KrakauerDepartments of Neurology and Neuroscience, Johns Hopkins University.
Tomoko KitagoDepartment of Neurology, Columbia University Medical Center.

Funding

Functional data analytics for kinematic assessments of motor controlR01NS097423 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GOLDSMITH, JEFF · 2016 to 2020
$1.8M
Statistical methods for biosignals with varying domainsR01HL123407 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI CRAINICEANU, CIPRIAN M · 2014 to 2017
$1.6M
Generalized, multilevel functional response models applied to accelerometer data.R21EB018917 · NIBIB · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GOLDSMITH, JEFF · 2015 to 2016
$395k
NHLBI NIH HHS R01 HL123407NIBIB NIH HHS R21 EB018917NINDS NIH HHS R01 NS097423
6 · The paper itself

Abstract

We propose a novel method for estimating population-level and subject-specific effects of covariates on the variability of functional data. We extend the functional principal components analysis framework by modeling the variance of principal component scores as a function of covariates and subject-specific random effects. In a setting where principal components are largely invariant across subjects and covariate values, modeling the variance of these scores provides a flexible and interpretable way to explore factors that affect the variability of functional data. Our work is motivated by a novel dataset from an experiment assessing upper extremity motor control, and quantifies the reduction in motion variance associated with skill learning.

Indexed as

Functional DataKinematic DataMotor ControlProbabilistic PCAVariance ModelingVariational Bayes

Identifiers

PMID30416231
PMCPMC6223649

What OpenQuestion holds

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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.