Neural Basis of Human Working Memory
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Neurocognitive Tasks, Ripple Neuromed Summit System.
- Who it may be relevant to
- Registry conditions: Memory Disorders. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
This ClinicalTrials.gov entry corresponds to the Neural Basis of Human Working Memory protocol approved under Vanderbilt University Medical Center IRB #251231. This study investigates the neural activity underlying human working memory, via local field potential changes (macro level) and/or single neuronal spiking changes (micro level) from depth electrodes placed for invasive seizure monitoring. Subjects will complete neurocognitive tasks while neural recordings are collected. Some patients will complete neurocognitive tasks while stimulation is applied via depth electrodes. Further understanding the neural activity changes underlying normal and impaired working memory may help to identify novel diagnostic methods and treatments for impaired working memory and may support the use of stimulation for treatment of memory disorders.
Interventions
- Behavioral Neurocognitive Tasks
Participants complete computerized neurocognitive tasks assessing working memory, response inhibition, decision-making, reward processing, and other related cognitive functions during sEEG monitoring. Tasks may include the stop signal reaction time task, the n-back working memory task, the delayed response task, the match/nonmatch task, the gambling task, the card guessing task, and the emotional stop signal reaction time task. Intracranial neural activity is recorded during task performance, an - Device Ripple Neuromed Summit System
Neurophysiology system designed to allow recording of neural signals as well as delivery of neural stimulation. The system is a portable unit which is connected to cables connected to the clinical electrodes. Neurophysiology signals from the electrodes can be recorded, amplified, and processed by the unit. The unit also has the ability to deliver electrical stimulation through the electrodes according to programmed parameters.
Primary outcome measures
- Local field potential changes in response to working memory tasks [Time frame: During patient's epilepsy monitoring stay, approximately 20-30 minutes]
- Single unit neuronal spiking changes in response to memory tasks [Time frame: During patient's epilepsy monitoring stay, approximately 20-30 minutes]
- Behavioral performance changes with stimulation [Time frame: During patient's epilepsy monitoring stay, approximately 20-30 minutes]
Eligibility criteria
Inclusion criteria
- Undergoing SEEG monitoring at Vanderbilt University Medical Center
- Age >18
- English speaking
Exclusion criteria
- Age <18
- Not able to complete questionnaires (unable to comprehend instructions or follow directions)
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- N/A
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Basic science
Study locations
United States · 1 center
- Vanderbilt University Medical Center — Nashville
Identifiers
NCT: NCT07617506 · 251231 · 1R21MH139624-01