INSIGHT, A Comprehensive, Multidisciplinary Brain Training System
NCT ID: NCT02780739
Last Updated: 2016-05-23
Study Results
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Basic Information
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COMPLETED
NA
521 participants
INTERVENTIONAL
2014-03-31
2014-11-30
Brief Summary
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Detailed Description
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The project was divided into two phases, with the first occurring in February -November 2014 and the second occurring February - December 2015. The two phases were similar in structure and goals/hypotheses, but had several methodological differences in terms of interventions, arms, and outcome measures. This document contains information pertinent to only the 2014 phase, which examined the relative contributions of physical fitness intervention, video-game based training, and high-definition transcranial direct-current brain stimulation (HD-tDCS) to the improvement of Gf/ARP, executive function, working memory, relational memory, physical fitness level, and brain structure/function.
Arms/groups completed 1 week of testing to establish baseline measurements of cognitive abilities, physical fitness, and brain structure/function. 16 weeks of various intervention protocols. These protocols could include single or multiple intervention type(s) with varying schedules. Three 70-min training sessions were completed per week, so all arms completed 56 hours of training, total. Following completion of the intervention period was 1 week of post-assessment to measure changes in cognitive abilities, physical fitness, and brain structure/function.
Technical Justification for Physical Fitness Intervention: The beneficial effects of physical fitness on cognitive performance and brain health have been documented in many studies. For example, this literature suggests that increased exercise leads to the birth of new neurons in the hippocampus (a key brain region underlying Gf), increased connections among neurons throughout the brain, the development of new vasculature structure, increased production of neurotrophic proteins, enhanced learning and memory, and enhanced executive control including attention and inhibition, working memory, mental flexibility, and action monitoring. In particular, (1) exercise effects are largest for tasks that involve executive control functions for working memory, planning, and problem solving - abilities that are essential for Gf and ARP; and (2) aerobic exercise training, when combined with strength and flexibility training, had a greater positive effect on cognition compared to exercise training programs that included only aerobic components. Such findings provide important justification for the physical activity intervention proposed here. Hence, the proposed fitness intervention employs a combined aerobic/resistance training program to further enhance the benefits of cognitive training on Gf and ARP.
Technical Justification for Video Game-Based Training: Training on five cognitive skills - (1) processing speed, (2) attention, (3) working memory, (4) relational memory, and (5) cognitive flexibility - has been shown to provide promising transfer results to Gf and other relevant constructs. This training regime is the basis for the design of the Mind Frontiers software platform. Mind Frontiers includes an integrated suite of mini-games that are designed to train these five core cognitive skills. The mechanics, as abstractions of the cognitive exercises, ensure that the scientific integrity and the training effect of the exercises are preserved, but the exercises are implemented as games with motivational features and adaptive difficulty.
Technical justification for HD-tDCS: It has been hypothesized that Gf and ARP are critically dependent on a fronto-parietal brain network, and thus that bilateral, specific stimulation of the frontal cortex with high definition transcranial direct current stimulation (HD-tDCS) would have an excitatory effect on neurons within that network, making them more likely to fire, and thereby enabling faster learning and facilitating transfer to Gf.
Technical Justification for Active Control: Change detection and visual search tasks were selected as the active control tasks because previous work had indicated that training low-level perceptual abilities did not transfer to Gf and ARP.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
DOUBLE
Study Groups
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Cognitive Training - 48 sessions
56 hours of video game training with Mind Frontiers adaptive cognitive training software (48 70-min sessions distributed over 16 weeks)
Cognitive Training - 48 sessions
Mind Frontiers cognitive training software (Aptima Inc.) is a Wild West-themed Android application played on Nexus 10 tablets. This intervention includes 20 70-min sessions (23.33 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The 6 mini-games, played in random order for 10 min each session, are Ante Up (Tower of London, executive functioning); Irrigator (visuospatial reasoning); Pen 'Em Up (dual task switching, executive function); Supply Run (Keep Track, working memory updating); Riding Shotgun (visuospatial working memory); and Sentry Duty (dual n-back, working memory). There is also a meta-game in which players build a town using resources earned from the mini-games, played for 5 min each session.
Fitness, Cognitive Training, sham tDCS
32 hours and 40 min of high-intensity cardiorespiratory fitness training (28 70-min sessions distributed over 16 weeks); 23 hours and 20 min of video game training with Mind Frontiers adaptive cognitive training software with simultaneous sham tDCS (20 70-min sessions distributed over weeks 5-16)
sham tDCS
Sham HD-tDCS is administered during the first 30 minutes of each Mind Frontiers session. Therefore, the schedule is 20 30-min sessions (10 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The HD-tDCS devices are Soterix Medical 2x2 models, using 4 electrodes (2 anodal and 2 cathodal). Electrodes are held in place with custom, 3D-printed electrode holders inserted into EEG caps, using EEG gel. Participants do not receive sustained stimulation; it is ramped up and ramped down over 30 sec at the beginning and end of the 30-min stimulation period to elicit the sensation of simulation and make the sham condition more convincing.
Cognitive Training - 20 sessions
Mind Frontiers cognitive training software (Aptima Inc.) is a Wild West-themed Android application played on Nexus 10 tablets. This intervention includes 20 70-min sessions (23.33 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The 6 mini-games, played in random order for 10 min each session, are Ante Up (Tower of London, executive functioning); Irrigator (visuospatial reasoning); Pen 'Em Up (dual task switching, executive function); Supply Run (Keep Track, working memory updating); Riding Shotgun (visuospatial working memory); and Sentry Duty (dual n-back, working memory). There is also a meta-game in which players build a town using resources earned from the mini-games, played for 5 min each session.
Fitness
Based on high intensity cardiovascular resistance training (HICRT), this intervention includes a combination of aerobic and strength training. Sessions are conducted in a group of ≤20 participants per class, with ≤5 participants per trainer. This intervention includes 28 70-min sessions (32.67 hrs) completed over 16 weeks: 3/wk weeks 1-4, 2/wk weeks 5-8, 1/wk weeks 9-16. At the first and last session, participants complete the Army Physical Readiness Test. All other sessions consist of: Warm-up; Walk/Run; 2 HICRT circuits with 3 sets of 3-4 exercises; 1-2 min jump rope and 4-min power series between HICRT segments; Drills \& Skills; and Cool-down/stretch.
Fitness, Cognitive Training, active tDCS
32 hours and 40 min of high-intensity cardiorespiratory fitness training (28 70-min sessions distributed over 16 weeks); 23 hours and 20 min of video game training with Mind Frontiers 1.0 adaptive cognitive training software with simultaneous active tDCS for a total of 10 hrs (20 70-min sessions distributed over weeks 5-16)
active tDCS
Active HD-tDCS is administered during the first 30 minutes of each Mind Frontiers session. Therefore, the schedule is 20 30-min sessions (10 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The HD-tDCS devices are Soterix Medical 2x2 models, using 4 electrodes (2 anodal and 2 cathodal). Electrodes are held in place with custom, 3D-printed electrode holders inserted into EEG caps, using EEG gel. Participants receive 2.0 mA current for 30 min, split over the 2 anodal electrodes, each drawing ≤1.0 mA. Stimulation is ramped up and ramped down over 30 sec at the beginning and end of the 30-min stimulation period.
Cognitive Training - 20 sessions
Mind Frontiers cognitive training software (Aptima Inc.) is a Wild West-themed Android application played on Nexus 10 tablets. This intervention includes 20 70-min sessions (23.33 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The 6 mini-games, played in random order for 10 min each session, are Ante Up (Tower of London, executive functioning); Irrigator (visuospatial reasoning); Pen 'Em Up (dual task switching, executive function); Supply Run (Keep Track, working memory updating); Riding Shotgun (visuospatial working memory); and Sentry Duty (dual n-back, working memory). There is also a meta-game in which players build a town using resources earned from the mini-games, played for 5 min each session.
Fitness
Based on high intensity cardiovascular resistance training (HICRT), this intervention includes a combination of aerobic and strength training. Sessions are conducted in a group of ≤20 participants per class, with ≤5 participants per trainer. This intervention includes 28 70-min sessions (32.67 hrs) completed over 16 weeks: 3/wk weeks 1-4, 2/wk weeks 5-8, 1/wk weeks 9-16. At the first and last session, participants complete the Army Physical Readiness Test. All other sessions consist of: Warm-up; Walk/Run; 2 HICRT circuits with 3 sets of 3-4 exercises; 1-2 min jump rope and 4-min power series between HICRT segments; Drills \& Skills; and Cool-down/stretch.
Active Control
56 hours of video game training with visual search and change detection tasks using open sesame software (48 70-min sessions distributed over 16 weeks)
Active Control
The active control condition consists of 2 tasks (change detection and visual search) with 3 variants each. This intervention includes 48 70-min sessions (56 hrs) completed over 16 weeks: 3/wk. The 6 tasks are played in random order for 10 min each session.
No Contact Control
Completed no study activities for 16 weeks after pre-assessment, then returned for post-assessment
No interventions assigned to this group
Interventions
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active tDCS
Active HD-tDCS is administered during the first 30 minutes of each Mind Frontiers session. Therefore, the schedule is 20 30-min sessions (10 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The HD-tDCS devices are Soterix Medical 2x2 models, using 4 electrodes (2 anodal and 2 cathodal). Electrodes are held in place with custom, 3D-printed electrode holders inserted into EEG caps, using EEG gel. Participants receive 2.0 mA current for 30 min, split over the 2 anodal electrodes, each drawing ≤1.0 mA. Stimulation is ramped up and ramped down over 30 sec at the beginning and end of the 30-min stimulation period.
sham tDCS
Sham HD-tDCS is administered during the first 30 minutes of each Mind Frontiers session. Therefore, the schedule is 20 30-min sessions (10 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The HD-tDCS devices are Soterix Medical 2x2 models, using 4 electrodes (2 anodal and 2 cathodal). Electrodes are held in place with custom, 3D-printed electrode holders inserted into EEG caps, using EEG gel. Participants do not receive sustained stimulation; it is ramped up and ramped down over 30 sec at the beginning and end of the 30-min stimulation period to elicit the sensation of simulation and make the sham condition more convincing.
Cognitive Training - 20 sessions
Mind Frontiers cognitive training software (Aptima Inc.) is a Wild West-themed Android application played on Nexus 10 tablets. This intervention includes 20 70-min sessions (23.33 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The 6 mini-games, played in random order for 10 min each session, are Ante Up (Tower of London, executive functioning); Irrigator (visuospatial reasoning); Pen 'Em Up (dual task switching, executive function); Supply Run (Keep Track, working memory updating); Riding Shotgun (visuospatial working memory); and Sentry Duty (dual n-back, working memory). There is also a meta-game in which players build a town using resources earned from the mini-games, played for 5 min each session.
Cognitive Training - 48 sessions
Mind Frontiers cognitive training software (Aptima Inc.) is a Wild West-themed Android application played on Nexus 10 tablets. This intervention includes 20 70-min sessions (23.33 hrs) completed over 12 weeks: 1/wk weeks 5-8, 2/wk weeks 9-16. The 6 mini-games, played in random order for 10 min each session, are Ante Up (Tower of London, executive functioning); Irrigator (visuospatial reasoning); Pen 'Em Up (dual task switching, executive function); Supply Run (Keep Track, working memory updating); Riding Shotgun (visuospatial working memory); and Sentry Duty (dual n-back, working memory). There is also a meta-game in which players build a town using resources earned from the mini-games, played for 5 min each session.
Fitness
Based on high intensity cardiovascular resistance training (HICRT), this intervention includes a combination of aerobic and strength training. Sessions are conducted in a group of ≤20 participants per class, with ≤5 participants per trainer. This intervention includes 28 70-min sessions (32.67 hrs) completed over 16 weeks: 3/wk weeks 1-4, 2/wk weeks 5-8, 1/wk weeks 9-16. At the first and last session, participants complete the Army Physical Readiness Test. All other sessions consist of: Warm-up; Walk/Run; 2 HICRT circuits with 3 sets of 3-4 exercises; 1-2 min jump rope and 4-min power series between HICRT segments; Drills \& Skills; and Cool-down/stretch.
Active Control
The active control condition consists of 2 tasks (change detection and visual search) with 3 variants each. This intervention includes 48 70-min sessions (56 hrs) completed over 16 weeks: 3/wk. The 6 tasks are played in random order for 10 min each session.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* US citizen, US permanent resident, or student/work visa sponsored by UIUC
* Available for 18-20 weeks
* Ages 18 - 44
* Normal or corrected-to-normal vision
* Normal or corrected-to-normal hearing
Exclusion Criteria
* Currently taking any medication affecting CNS
* Has taken medication affecting CNS in past 2 months
* Current or planned pregnancy
* Recurrent migraines
* Concussion in past 2 years
* History of stroke
* History of epilepsy/seizures
* Any medical condition affecting CNS (e.g., history of thyroid cancer)
* Any medical condition affecting capability to exercise (e.g., paralysis)
* Reading disability/dyslexia
* Prior brain surgery
* Known brain malformation
* Colorblindness
* Heart condition that requires physician approval for physical activity
* Chest pain (with OR without physical activity)
* Loss of balance/dizziness/loss of consciousness
* Bone or joint problem that could be made worse by a change in physical activity
* Medication for blood pressure or a heart condition
18 Years
44 Years
ALL
Yes
Sponsors
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The City College of New York
OTHER
Aptima, Inc.
UNKNOWN
Georgia Institute of Technology
OTHER
Circinnus LLC
UNKNOWN
Autonomous University of Madrid, Spain
UNKNOWN
University of Illinois at Urbana-Champaign
OTHER
Responsible Party
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Principal Investigators
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Aron K Barbey, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
University of Illinois at Urbana-Champaign
Arthur F Kramer, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
Northeastern University
Neal J Cohen, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
University of Illinois at Urbana-Champaign
Charles H Hillman, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
University of Illinois at Urbana-Champaign
Locations
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University of Illinois at Urbana-Champaign
Urbana, Illinois, United States
Countries
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References
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Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
14212
Identifier Type: OTHER
Identifier Source: secondary_id
2014-1312170004-Ph1a
Identifier Type: -
Identifier Source: org_study_id
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