- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT07663578
Cognitive and Electrophysiological Assessment of Non-Invasive Temporally-Interfering Electric Fields Stimulation (TIEFS) (TIEFS)
The goal of this clinical trial is to learn how a non-invasive brain stimulation method called Temporally Interfering Electric Fields Stimulation (TIEFS) affects brain activity and thinking in adults. TIEFS uses electrical currents applied to the scalp to influence brain activity without surgery.
The main questions this study aims to answer are:
- How does TIEFS change brain signals measured with brain recordings?
- Does TIEFS affect thinking abilities such as memory, language, movement, or perception?
- Is TIEFS safe and well tolerated when used in people?
This study includes two groups of participants. One group includes adults with epilepsy who are already undergoing specialized brain monitoring as part of their medical care. The other group includes healthy adults with no history of seizures.
Participants will:
- Receive brief sessions of TIEFS using electrodes placed on the scalp
- Complete computer-based tasks that test memory, attention, language, or movement. Answer questions about how the stimulation feels
- Have brain activity recorded during the study
Each study visit lasts up to three hours and may occur in one or two sessions. Information from this study may help researchers better understand the human brain and support the development of future non-invasive brain stimulation treatments.
Tutkimuksen yleiskatsaus
Tila
Ehdot
Interventio / Hoito
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskeluyhteys
- Nimi: Nigel P Pedersen, MBBS
- Puhelinnumero: 617-462-8120
- Sähköposti: nppedersen@health.ucdavis.edu
Tutki yhteystietojen varmuuskopiointi
- Nimi: Raul S Castillo-Astorga, MD
- Puhelinnumero: 530-220-0057
- Sähköposti: rcastilloastorga@ucdavis.edu
Opiskelupaikat
-
-
California
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Sacramento, California, Yhdysvallat, 95817
- Rekrytointi
- University of California Davis Medical Center
-
Ottaa yhteyttä:
- Nigel P Pedersen, MBBS
- Puhelinnumero: 617-462-8120
- Sähköposti: nppedersen@health.ucdavis.edu
-
Päätutkija:
- Nigel P Pedersen, MBBS
-
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
- Vanhempi Aikuinen
Hyväksyy terveitä vapaaehtoisia
Kuvaus
Inclusion Criteria:
- Adult patients (age 18-65 years of age) undergoing an intracerebral electrophysiology study for epilepsy pre-surgical evaluation are eligible for inclusion.
- For healthy control subjects are also eligible for inclusion (Scalp EEG measurements).
- Participants must be able to sufficiently speak and understand English or Spanish for consent and be able to understand and complete cognitive tasks.
- All subjects must have the ability to give valid informed consent.
Exclusion Criteria:
- No pregnant women will be recruited.
- People with implanted electrical devices such as Deep Brain Stimulation devices or Pacemakers.
- No prisoners will be recruited.
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Perustiede
- Jako: Ei satunnaistettu
- Inventiomalli: Peräkkäinen tehtävä
- Naamiointi: Yksittäinen
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
|
Kokeellinen: Comparison of Active vs Sham TIEFS Stimulation in SEEG patients
This arm involves a within-subject comparison of different frequencies of active TIEFS stimulation and sham stimulation, all within the same session.
Patients will already have been admitted to SEEG surgery, and will be approached while still having the electrodes implanted.
Each participant will receive multiple types of stimulation at different envelope frequencies (ranging from 1-130 Hz).
During the session, electrodes will be placed on the scalp to administer TIEFS at varying frequencies.
Each frequency will be tested in separate trials within the session, with multiple trials per frequency.
The results from these trials will be averaged to determine the overall impact of each frequency on brain activity (measured through SEEG) and/or cognitive functions (evaluated using tasks related to memory, language, motor function, and perception).
Sham stimulation will also be delivered within the same session, and participants will be blinded to the type of stimulation (active vs sham).
|
Temporal Interference Electrical Stimulation (TIEFS) is a non-invasive brain stimulation technique that uses two high-frequency electrical fields (>1 kHz) to generate an interference pattern at a specific brain region, creating a low-frequency envelope (Δf = f2 - f1) at the target depth.
Unlike traditional stimulation methods, which affect only superficial brain regions, TIEFS can reach deeper structures without the need for implanted electrodes.
The stimulation is applied through scalp electrodes.
It has the potential for targeted brain interventions in both functional studies and clinical applications for neurological conditions.
|
|
Kokeellinen: Comparison of Active vs Sham TIEFS Stimulation in Healthy Subjects
This arm involves a within-subject comparison of active and sham TIEFS stimulation in healthy control subjects.
Participants will receive both active and sham stimulation in a single session, with different frequencies of TIEFS applied during active stimulation.
The goal is to measure the changes in brain activity using EEG and assess the impact of TIEFS on cognitive functions such as memory, motor function, language, and perception.
Participants will be blinded to the type of stimulation they are receiving during the session.
|
Temporal Interference Electrical Stimulation (TIEFS) is a non-invasive brain stimulation technique that uses two high-frequency electrical fields (>1 kHz) to generate an interference pattern at a specific brain region, creating a low-frequency envelope (Δf = f2 - f1) at the target depth.
Unlike traditional stimulation methods, which affect only superficial brain regions, TIEFS can reach deeper structures without the need for implanted electrodes.
The stimulation is applied through scalp electrodes.
It has the potential for targeted brain interventions in both functional studies and clinical applications for neurological conditions.
|
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Brain activity changes during Stimulation
Aikaikkuna: Measurements will be recorded throughout the stimulation session (lasting up to 90 minutes), with data collected before, during, and immediately after each stimulation.
|
This outcome measures the changes in brain activity, either measured through scalp EEG electrodes (in Healthy Participant controls), or intracranial stereotaxic EEG electrodes (for SEEG pre-surgical evaluation epilepsy patients).
Local field potential (LFP) power and EEG power in response to active TIEFS stimulation will be compared to sham stimulation.
Electrical signals recorded from the brain reflect neural activity.
Intracranial signals will be measured across different locations in the brain using implanted SEEG electrodes.
Additionally, SEEG electrodes may have tetrodes tips to capture single neuron activity.
We will compare how the brain's electrical activity changes during active TIEFS at various frequencies and during the sham stimulation to assess the impact on brain and neural function.
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Measurements will be recorded throughout the stimulation session (lasting up to 90 minutes), with data collected before, during, and immediately after each stimulation.
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Yhteistyökumppanit ja tutkijat
Sponsori
Tutkijat
- Päätutkija: Nigel P Pedersen, MBBS, University of California Davis, School of Medicine, Neurology Department
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Todellinen)
Ensisijainen valmistuminen (Arvioitu)
Opintojen valmistuminen (Arvioitu)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
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