Evidence map›Paper›PMID 21431312›Full record

Trial reportPsychopharmacology2011

Dexamphetamine effects on separate constructs in the rubber hand illusion test.

Matthew A Albrecht, Mathew T Martin-Iverson, Greg Price, Joseph Lee, Rajan Iyyalol, Flavie Waters

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in Psychopharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.0field-weighted citation impact, top 15% of its field
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

20 citing papers in PubMed, 38 citations in OpenAlex.

  1. Trial
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  9. Autism and psychosis as diametrical disorders of embodiment.Evolution, medicine, and public health · 2019
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  18. Review
  19. The computational anatomy of psychosis.Frontiers in psychiatry · 2013
    Article
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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

6 authors at 2 institutions in 2 countries.

Matthew A AlbrechtPharmacology and Anaesthesiology Unit, School of Medicine and Pharmacology, The University of Western Australia, Perth, Australia. albrem04@student.uwa.edu.au
Mathew T Martin-Iverson
Greg Price
Joseph Lee
Rajan Iyyalol
Flavie Waters
University of Western Australia · AUDrylands Research · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleCorporeal awareness is an integral component of self-consciousness and is distorted in several neurological and psychiatric disorders. Research regarding the neural underpinnings of corporeal awareness has made much progress recently using the rubber hand illusion (RHI) procedure. However, more studies are needed to investigate the possibility of several dissociable constructs related to the RHI specifically, and corporeal awareness generally.

objectivesConsidering dopamine's involvement in many perceptual-motor learning processes, as well as its apparent relationship with disorders such as schizophrenia that are linked to body ownership disturbances, we gave 0.45 mg/kg dexamphetamine (a dopamine transporter reverser) to 20 healthy participants to examine the effects of increased dopamine transmission on the RHI.

methodsThe effect of dexamphetamine on separate quantitative constructs underlying RHI were examined including embodiment of rubber hand, loss of ownership of real hand, perception of movement, affect, deafference, and proprioceptive drift. The experiment was a double-blind, placebo-controlled, cross-over design.

resultsDexamphetamine increased participants' ratings of embodiment (particularly "ownership") of the rubber hand and was associated with the experience of loss of ownership of the person's real hand. There were significant increases from asynchronous to synchronous stroking for the measures of movement and proprioceptive drift after placebo but not dexamphetamine. There were no changes in the measures of other constructs.

conclusionsThese results show a novel pharmacological manipulation of separate constructs of the RHI. This finding may aid in our understanding of disorders that have overlapping disturbances in both dopamine activity and body representations, particularly schizophrenia.

Indexed as

AdultAwarenessBlood PressureCross-Over StudiesDextroamphetamineDopamineDopamine Plasma Membrane Transport ProteinsDopamine Uptake InhibitorsDouble-Blind MethodFemaleHeart RateHumansIllusionsMaleNeuropsychological TestsPhysical StimulationDextroamphetamineDopamineDopamine Plasma Membrane Transport ProteinsDopamine Uptake Inhibitors

Identifiers

PMID21431312
OpenAlexW2064948051

What OpenQuestion holds

Textmetadata
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.