Evidence map›Paper›PMID 27225623›Full record

ArticlePhysiological reports2016

Mechanisms controlling human head stabilization during random rotational perturbations in the horizontal plane revisited.

Ann-Katrin Stensdotter, Morten Dinhoff Pedersen, Ingebrigt Meisingset, Ottar Vasseljen, Øyvind Stavdahl

Abstract read
In one paragraph

Article in Physiological reports, 2016. 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.

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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

5 authors.

Ann-Katrin StensdotterFaculty of Health and Social Sciences, Physiotherapy, The Norwegian University of Science and Technology NTNU, Trondheim, Norway Department of Public Health and General Practice, Faculty of Medicine, The Norwegian University of Science and Technology NTNU, Trondheim, Norway ann-katrin.stensdotter@ntnu.no.
Morten Dinhoff PedersenDepartment of Engineering Cybernetics, Faculty of Information Technology Mathematics and Electrical Engineering, The Norwegian University of Science and Technology NTNU, Trondheim, Norway.
Ingebrigt MeisingsetDepartment of Public Health and General Practice, Faculty of Medicine, The Norwegian University of Science and Technology NTNU, Trondheim, Norway.
Ottar VasseljenDepartment of Public Health and General Practice, Faculty of Medicine, The Norwegian University of Science and Technology NTNU, Trondheim, Norway.
Øyvind StavdahlDepartment of Engineering Cybernetics, Faculty of Information Technology Mathematics and Electrical Engineering, The Norwegian University of Science and Technology NTNU, Trondheim, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study repeats the experimental protocol for investigation of head stabilization in healthy humans, described by Keshner and Peterson (1995) but with a modification of the analysis. Head movements were considered with respect to the room instead of relative to the trunk. The aim was to investigate the approximate contribution of reflex and voluntary control across perturbing frequencies and conditions with modulation of visual information and mental attention and discuss the resulting outcome while comparing methods. Seventeen healthy individuals were asked to keep the head steady in space while subjected to pseudorandom rotational perturbations in the horizontal plane, firmly seated on an actuated chair. Both methods confirmed the results for gain in previous studies showing fair ability to keep the head steady in space below 1 Hz with vision. Compensation deteriorated when vision was removed and worsened further with addition of a mental task. Between 1 and 2 Hz, unity gain occurred between head and trunk movements, whereas above 2 Hz the head moved more than the trunk. For phase angles, the original method demonstrated a phase split occurring from ~1 Hz, a purely mathematical artifact that caused subjects with virtually identical movements to appear as significantly different. This artifact was eliminated by analyzing the head-room relative to trunk-room rather than head-trunk relative to trunk-room angles, thus preventing potentially erroneous interpretations of the results.

Indexed as

RotationAdultFemaleHead MovementsHumansMalePostureanalysis methodsmotor controlneck

Identifiers

PMID27225623
PMCPMC4886158

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Registered trials

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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.