Investigating Dynamic Interactions in Distributed Cognitive Control Networks
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About
The purpose of this study is to investigate the brain activity associated with cognitive tasks (thinking, reasoning, remembering) in order to understand how the brain works during certain tasks and to improve treatment for diseases like dementia and attention deficit disorders. Cognitive (thinking) impairment may include poor memory function, poor attention span, or psychiatric disorders (ex: ADD, depression). The investigators are interested in the brain activity related to these issues, and want to investigate changes in brain activity while we record activity from specific areas of the brain. These recordings are in addition to clinical (routine or standard of care) recordings being performed to monitor for seizures and do not impact the clinical care.
Full description
Routine intracranial monitoring (ICM) surgery involves placement of several (10-20) electrodes into the brain through a small opening to a target structure. Participants have been deemed a surgical candidate for this procedure, and detailed discussion of the procedure will occur as part of the surgical consent. The Investigators may place sensors (stickers) to monitor participant's arm/hand movements and brain activity. Sensors may be placed on participant's scalp and/or arms and legs. The Investigators may place a device on participant's wrist or finger to measure position (accelerometer). The Investigators may perform voice recordings, eye movement tracking, and motion capture recordings to obtain measures of how stimulation affects speech and other movements. These are performed without any attachment of devices.
Cognitive tasks: Multiple cognitive tasks may be used and will be decided upon based on the clinical symptoms, exam, or comorbidities. These may include Go/No-go, Simon/Stroop task, Stop-signal task, language tasks, Tower of London, gambling task, maze navigation, choice-reaction time, delay tasks, and attention tasks.
Cortico-cortical evoked potentials and Patterned Stimulation: Stimulus pulses at precise time intervals and or various patterns will be delivered across adjacent electrode contacts at a series of electrode sites while simultaneously recording neural activity at other electrodes. This does not require any activity from participant.
Tasks will be administered via computer monitor positioned in front of the you. This will be connected to a recording computer. Participant will respond via keyboard, mouse, or response button.
Enrollment
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Inclusion criteria
- Eligible for surgery based on multi-disciplinary consensus review
- Have a diagnosis of medically-refractory epilepsy
- A minimum of 18 years of age
- Willingness to participate in the paradigms described in the protocol
Exclusion criteria
- Inability to provide full and informed consent
- Age younger than 18
- Are not physically able to participate in study-related activities
- Major medical or surgical complication
Trial design
30 participants in 1 patient group
Trial contacts and locations
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Central trial contact
Jessica N Bentley, MD
Data sourced from clinicaltrials.gov
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