Transferring Speed of Processing Gains to Everyday Cognitive Tasks After Stroke

Summary

This study will compare two approaches to cognitive rehabilitation in adults with stroke with persistent, mild to moderate, cognitive impairment. Both approaches will feature a web-based computer "game" that trains cognitive processing speed, i.e., how quickly individuals process information that they receive through their senses. This training is termed Speed of Processing Training (SOPT). One approach will add (A) in-lab training on everyday activities with important cognitive components and (B) procedures designed to transfer improvements in cognition from the treatment setting to everyday life. This approach is termed Constraint-Induced Cognitive Therapy (CICT). The other approach will add (A) in-lab training on relaxation, healthy nutrition, and healthy sleep and (B) procedures designed to promote integration of these lifestyle changes into everyday life. This approach is termed Brain Fitness-Heath Education Lifestyle Program (BF-HELP).

Both CICT and BF-HELP will involve 35 hours of training. Ten 1-hour sessions of SOPT will be scheduled in the home with training conducted independently by participants. Ten 2.5 hours of in-lab, face-to-face, therapist directed sessions will be scheduled. These sessions will feature a brief period of SOPT; the bulk of the sessions will be committed to in-lab training on the target behaviors and the procedures designed to promote transfer of therapeutic gains to daily life; The set of the latter procedures is termed the Transfer Package. To accommodate the demands of participants' other activities, training sessions will be permitted to be scheduled as tightly as every weekday over 2 weeks or as loosely as every other weekday or so over 4 weeks. Family caregivers in both groups will also receive training on how to best support participants in their therapeutic program.

The study will also test if there is an advantage to placing follow-up phone calls after treatment ends. The purpose of the calls will be to support transition of any behavioral changes achieved during treatment into everyday life on a long-term basis.

Participants will be randomly assigned to the interventions.

Testing will happen one month before treatment, one day before treatment, one day afterwards, and 6-months afterwards. Outcomes measured will include cognitive processing speed, cognitive function on laboratory tests, and spontaneous performance of everyday activities with important cognitive components in daily life.

Conditions

• Stroke
• Cognitive Dysfunction

Interventions

BEHAVIORAL

Speed of Processing Training

This training component targets cognitive processing speed, i.e., how quickly individuals process information that they receive through their senses. Cognitive processing speed is thought to be a basic capacity of the brain that underlies several other cognitive functions. Training is implemented using a web-based computer "game", in which participants are required to fixate on a target at the center of the screen and identify targets in the periphery. The game is made progressively more difficult, in small increments, as participants gain mastery by increasing the speed at which targets are presented and increasing the number of distractors.

BEHAVIORAL

Instrumental Activities of Daily Living In-lab Training

The training component is thought to bridge SOPT training, which targets a basic cognitive capacity, and IADL performance in daily life. This training component will involve repeated trials in which participants will practice carrying out simulated IADL tasks in the lab under the supervision of the trainer. The training will follow shaping principles, i.e., task requirements will be made progressively more challenging, in small increments, as participants gain mastery. Frequent, positive feedback will be provided.

BEHAVIORAL

Cognitive Transfer Packagke

This training component is designed to transfer improvements in cognition from the treatment setting to everyday life. Elements of this package include negotiating a behavioral contract about the roles of the participant and family caregiver in the treatment, monitoring behavior outside the lab, and assigning performance of IADL as homework.

BEHAVIORAL

Family Caregiver Coaching

One or more family members of the participant will receive coaching on how to best support the participant in carrying out the in-home components of the intervention.

BEHAVIORAL

Follow-up Phone Calls

After treatment ends, four phone calls will be placed once-a-week for four weeks, then once-a-month for 5 months. The follow-up calls will target transition of any changes achieved during treatment into everyday life on a long-term basis after.

BEHAVIORAL

Healthy Lifestyle In-lab Training

This training component is designed to promote lifestyle changes that support brain fitness. Participants will receive education and coaching in the lab on relaxation, healthy nutrition, and healthy sleep.

BEHAVIORAL

Healthy Lifestyle Transfer Package

This training component is designed to support integration into everyday life of the lifestyle changes training in the lab. Elements of this package include negotiating a behavioral contract about the roles of the participant and family caregiver in the treatment, monitoring behavior outside the lab, and assigning relaxation exercises, for example, as homework.

Sponsors & Collaborators

• National Institute on Aging (NIA)

  collaborator NIH

• Posit Science

  collaborator UNKNOWN

• University of Alabama at Birmingham

  lead OTHER

Principal Investigators

• Gitendra Uswatte, PhD · University of Alabama at Birmingham

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

40 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2022-06-09

Primary Completion

2026-08-31

Completion

2027-02-28

Countries

• United States

Study Locations