Evidence map›Paper›PMID 41341544›Full record

ArticleBrain communications2025

Consensus on covert awareness: a Delphi study.

Caroline Schnakers, Berno Overbeek, Niko Fullmer, Liliana Teixeira, Matteo Zandalasini, Kseniia Yatsko, Ann-Marie Morrissey, Nathan Zasler, Anna Estraneo

Abstract read
In one paragraph

Article in Brain communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

9 authors.

Caroline SchnakersResearch Institute,Casa Colina Hospital and Centers for Healthcare, Pomona, CA 91767, USA.
Berno OverbeekDepartment of Primary and Community Care, Radboud University Medical Center, Research Institute for Medical Innovation, Nijmegen, 6525 GA, The Netherlands.
Niko FullmerResearch Institute,Casa Colina Hospital and Centers for Healthcare, Pomona, CA 91767, USA.
Liliana TeixeiraCenter for Translational Health and Medical Biotechnology Research (TBIO)/Health Research Network (RISE-Health), Polytechnic Institute of Porto, School of Health, 4200-465 Porto, Portugal.
Matteo ZandalasiniDipartimento di Medicina Riabilitativa, Azienda USL di Piacenza, Unità Spinale, Neuroriabilitazione e Medicina Riabilitativa Intensiva, 29121 Piacenza, Italy.
Kseniia YatskoFaculty of Fundamental Medicine, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia.
Ann-Marie MorrisseySchool of Allied Health, Health Research Institute, Ageing Research Centre, University of Limerick, Limerick, V94T9PX, Ireland.
Nathan ZaslerDepartment of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA 23284, USA.
Anna EstraneoDepartment of Rehabilitation, Don Gnocchi Foundation IRCCS, 50143 Florence, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Identifying wilful brain activity in patients with disorders of consciousness is critical, as some patients fail to exhibit behavioural signs of consciousness at the bedside but respond to active tasks via neuroimaging or electrophysiological measures. Standardized terminology for this subgroup is absent while it is essential for advancing research and clinical care. The objective of this study was to determine the level of consensus among a large group of international experts on terminology and definitions for this clinical entity, as described by terms such as covert awareness, cognitive motor dissociation, functional locked-in syndrome, and non-behavioural minimally conscious state. A Delphi study was conducted using REDCap to evaluate expert agreement on terminology and definitions. The study was conducted among international experts, primarily from Europe/UK, the USA and other regions. Ninety-six experts participated. Among these, 75 (78%) completed both rounds. Participants were predominantly clinical scientists (71%) working in rehabilitation settings (63%). A Delphi method was followed. Consensus on terminology and related definitions was defined as a median score of 5, an interquartile range ≤1 and ≥75% agreement (scores of 4 or 5). Within two rounds, consensus was achieved for over two-thirds of the statements. The term 'Covert Awareness' and its associated definition were identified as the preferred terminology by an international expert panel. We recommend the use of 'Covert Awareness' since our large group of international experts consistently agreed on such preferred term for this subgroup of patients with disorders of consciousness. This consensus (>75% agreement) establishes a foundation both for future research and clinical standardization. The findings have implications for improving diagnostic accuracy and advancing understanding of covert awareness, although further study is needed to refine and apply the agreed-upon definition in clinical practice.

Indexed as

consciousnesscovert awarenessminimally conscious stateunresponsive wakefulness syndromevegetative state

Identifiers

PMID41341544
PMCPMC12671493

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