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CompletedNCT05581810Updated Dec 6, 2024

Rehabilitation for Functional Memory Symptoms After Concussion

An interventional study of Cognitive Behavioural Therapy (CBT) and Cognitive Rehabilitation in Mild Traumatic Brain Injury and Functional Neurological Disorder, sponsored by University of British Columbia. Completed at 10 sites in Canada. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2024-12-06.

Sponsored by University of British Columbia · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This study aims to evaluate the feasibility of novel cognitive behavioural therapy (CBT)-based intervention designed to improve functional memory symptoms after concussion. Participants will be randomized to CBT or an attention-matched control intervention (cognitive rehabilitation). The primary outcomes for this trial are feasibility metrics, including recruitment, patient-perceived credibility of treatment, patient adherence to treatment, therapists' compliance with the treatment protocol, and retention.

Read the detailed description

Background: Although objectively measurable memory impairments typically resolve within weeks after sustaining a concussion, many people continue to perceive memory problems one year later. There are no known effective treatments for this condition. A promising new approach may be to target psychological mechanisms that perpetuate excessively negative perceptions of memory ability.

Methods: A pilot randomized controlled trial to evaluate the feasibility of a new cognitive behavioural therapy (CBT)-based treatment program specifically designed to improve persistent memory complaints after concussion. The main inclusion criteria will be (i) concussion in the past 6 to 24 months, (ii) research diagnosis of Functional Cognitive Disorder. Participants will be randomized (1:1) into one of two groups: CBT or cognitive rehabilitation. Individuals in both groups will participate in 11 x 50-minute sessions delivered over Zoom videoconference, co-facilitated by clinical psychology graduate students under the supervision of a registered clinical psychologist.

Aims: To evaluate the feasibility and potential efficacy of CBT for functional memory symptoms after concussion.

Approach: Prespecified feasibility criteria on recruitment, patient-perceived credibility of treatment, patient adherence to treatment, therapists' compliance with the treatment protocol, and retention will determine the success of the pilot trial. The investigators further hypothesize that CBT will be associated with greater reductions in memory concern compared to the control intervention.

Implications: The results of this pilot study will inform a larger, more definitive clinical trial focused on testing efficacy.

02

Conditions studied

  • Mild Traumatic Brain Injury
  • Functional Neurological Disorder

Keywords

  • Concussion
  • Functional Cognitive Disorder
03

In context

Brain Injuries

2,113 studies on the registry are indexed under Brain Injuries; 385 are open to participants now.

This study's enrollment of 30 is below the median of 48 across 1,331 interventional studies indexed under Brain Injuries.

Browse Brain Injuries studies →

Lead sponsor

University of British Columbia is the lead sponsor of 1,309 studies on the registry; 253 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 1 (17%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18-65 years old
  • Fluent in English
  • Have regular access to the internet
  • Sustained a concussion according to the World Health Organization Neurotrauma Task Force definition between 6 and 24 months ago
  • Meet diagnostic criteria for Functional Cognitive Disorder

Exclusion criteria

Exclusion Criteria:

  • Performance validity test failure
  • Unstable/serious medical condition (e.g., cancer, multiple sclerosis, etc.),
  • Unstable severe/mental illness (e.g., schizophrenia requiring hospital admission in the past year)
  • Probable alcohol or drug use disorder
  • Taking a medication with a known side effect of memory impairment (e.g., benzodiazepines, opiates, or topiramate)
  • Contraindication(s) for MRI
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
30 participants (actual)

Study arms

  • Experimental
    Cognitive Behavioural Therapy (CBT)

    11 weekly sessions of cognitive behavioural therapy (CBT) delivered over videoconference

    Behavioral: Cognitive Behavioural Therapy (CBT)

  • Active comparator
    Cognitive Rehabilitation

    11 weekly sessions of traditional cognitive rehabilitation delivered over videoconference

    Behavioral: Cognitive Rehabilitation

Interventions

  • BehavioralCognitive Behavioural Therapy (CBT)

    Cognitive behavioural therapy for functional memory symptoms after concussion is delivered by a psychologist over 11 individual (1:1) secure videoconference sessions. The core active ingredients are 1) Behavioural experiments, which acts by phasing out compensatory strategies in order to increase normal memory use and 2) Cognitive reappraisal, which aids in re-interpreting memory lapses in order to reduce reactivity to them.

  • BehavioralCognitive Rehabilitation

    Training and practice with external memory aids/compensatory strategies, adapted from Shum et al. (2011). J Rehabil Med, 43(3):216-223.

06

What researchers measure

Primary outcomes

  1. Recruitment

    \>50% of eligible participants agree to enroll

    Time frame: Week 0

  2. Treatment credibility

    \>50% of enrolled participants rate the intervention as above midpoint on credibility

    Time frame: Week 2

  3. Patient adherence

    \>70% of participants attend at least 8 sessions

    Time frame: Week 12

  4. Therapists compliance

    Therapists cover 95% of essential element content

    Time frame: Week 12

  5. Retention

    \>80% of randomized participants complete the primary outcome measure immediately post-intervention

    Time frame: Week 12

  6. Memory concern

    Satisfaction subscale of the Multifactorial Memory Questionnaire \[range=0-72; higher scores indicate greater satisfaction with memory\]

    Time frame: Week 12

Secondary outcomes

  1. Avoidance

    Fear-Avoidance of Memory Loss Scale \[range=5-25; higher scores indicate greater fear and avoidance\]

    Time frame: Week 12

  2. Reliance on others

    Relative subscale of the Memory Compensation Questionnaire \[range=0-115; higher scores indicate greater dependence on others to remember things\]

    Time frame: Week 12

  3. Catastrophizing

    Adapted Pain Catastrophizing Scale \[range=0-52, higher scores indicate greater catastrophizing\]

    Time frame: Week 12

  4. Patient Global Impression of Change

    Single item rated on a scale of 1 (much worse) to 5 (much better) since the start of treatment

    Time frame: Week 12

07

Study locations

10 sites
  • Urgent and Primary Care Center: North Vancouver
    North Vancouver, British Columbia V7L 1A5, Canada
  • Lion's Gate Hosital
    North Vancouver, British Columbia V7L 2L7, Canada
  • Richmond Hospital
    Richmond, British Columbia V6X 1A2, Canada
  • Back in Motion (Post-Concussion Management Program)
    Surrey, British Columbia V3W 5A8, Canada
  • Mount Saint Joseph's Hospital
    Vancouver, British Columbia V5T 3N4, Canada
  • Vancouver General Hospital
    Vancouver, British Columbia V5Z 1M9, Canada
  • Lifemark (Post-Concussion Management Program)
    Vancouver, British Columbia V6B 6C1, Canada
  • University of British Columbia Hospital
    Vancouver, British Columbia V6T 2B5, Canada
  • Urgent and Primary Care Center: City Center
    Vancouver, British Columbia V6Z 0A3, Canada
  • St. Paul's Hospital
    Vancouver, British Columbia V6Z 1Y6, Canada
08

References and documents

Publications

  • Rioux M, Mamman R, Byworth MT, Panenka WJ, Howard AK, Perez DL, Schmidt J, Courchesne C, LeMoult J, Heran MK, Silverberg ND. Pilot feasibility randomised controlled trial of cognitive-behavioural therapy for functional cognitive disorder after concussion. BMJ Neurol Open. 2024 Oct 11;6(2):e000666. doi: 10.1136/bmjno-2024-000666. eCollection 2024. PubMed 39410977 ↗

Individual participant data

Plan to share: Yes — Upon reasonable request

Supporting information: Study protocol, Icf

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 6, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05581810
Lead sponsor
University of British Columbia
Collaborators
Harvard Medical School (HMS and HSDM)
Responsible party
Noah Silverberg (Principal Investigator, University of British Columbia) — Principal investigator
First posted
Oct 17, 2022
Start date
Nov 29, 2022
Primary completion
Jun 30, 2023
Completion
Nov 30, 2023
Last update
Dec 6, 2024

Study contacts

Noah Silverberg, PhD
principal investigator · University of British Columbia

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2024. You cannot join it, but the record below documents what was studied.

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