Amygdala-Prefrontal in Fear Extinction
Causal Dynamics of Human Amygdala-Prefrontal Circuits During Fear Extinction Learning
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Tao Xie, PhD
- Telefonnummer: 314-747-1443
- E-mail: xiet@wustl.edu
Undersøgelse Kontakt Backup
- Navn: Peter Brunner, PhD
- Telefonnummer: 314-747-1443
- E-mail: pbrunner@wustl.edu
Studiesteder
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Missouri
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St Louis, Missouri, Forenede Stater, 63110-1010
- Rekruttering
- Washington University School of Medicine
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Kontakt:
- Juliana Amaral Passipieri, PhD
- Telefonnummer: 314-747-1443
- E-mail: ajuliana@wustl.edu
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Kontakt:
- Tao Xie, PhD
- Telefonnummer: 314-747-1443
- E-mail: xiet@wustl.edu
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Ledende efterforsker:
- Tao Xie, PhD
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- At least 18 years of age.
- Able to understand the nature of the task.
- Able to provide informed consent themselves or provide consent through their legally authorized representative.
- Undergoing clinically indicated intracranial electrode implantation with coverage of at least one fear-related brain region, including the amygdala, hippocampus, cingulate cortex, insula, or prefrontal cortex.
Exclusion Criteria:
- Under the age of 18.
- Unable to understand the nature of the task.
- Unable to provide informed consent themselves or provide consent through their legally authorized representative.
- No clinically indicated intracranial electrode coverage in any fear-related brain region, including the amygdala, hippocampus, cingulate cortex, insula, or prefrontal cortex
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Eksperimentel: Amygdala-prefrontal in Fear Extinction
Participants will undergo direct intracranial electrical stimulation and complete a Pavlovian fear conditioning and extinction task while neural activity is recorded through clinically implanted stereoelectroencephalography (SEEG) electrodes.
Electrical stimulation, including single-pulse and/or high-frequency stimulation, will be delivered through the intracranial electrodes to investigate amygdala-prefrontal circuit dynamics.
Participants may also receive theta-burst stimulation of the amygdala during extinction learning.
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During a resting state and extinction learning phase, participants will receive electrical stimulation (single-pulse and/or high-frequency stimulation) through the intracranial electrodes while recording local field potentials from the neural networks.
Direct electrical stimulation will be accomplished using FDA-approved equipment and stimulation protocols that are consistent with those used routinely for clinical purposes.
Participants will be involved in a Pavlovian fear conditioning/extinction experiment while recording local field potential signals from the neural networks.
During the experiment, neutral stimuli will be paired with an aversive but not painful electric shock (via the surface skin of the hand/foot) or screeching sound.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Broadband high-frequency power (70-170 Hz) in amygdala-prefrontal circuits
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Broadband high-frequency power (70-170 Hz) will be quantified from local field potentials recorded through clinically implanted stereoelectroencephalography (SEEG) electrodes in the amygdala and prefrontal cortex.
Broadband high-frequency power will be assessed during fear processing and during intracranial electrical stimulation to characterize local neural activity within amygdala-prefrontal circuits.
For stimulation recordings, stimulation artifacts will be removed using appropriate artifact-removal methods, for example, MPARRM (matching pursuit-based artifact reconstruction and removal method) for single-pulse stimulation and LIBRA (linear baseline-integrated removal of artifacts) for high-frequency stimulation.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Oscillatory power at the stimulation frequency during intracranial electrical stimulation
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Oscillatory power at the stimulation frequency will be quantified from local field potentials recorded through clinically implanted stereoelectroencephalography (SEEG) electrodes in the amygdala and prefrontal cortex.
Power at the stimulation frequency will be assessed during intracranial electrical stimulation to quantify stimulation-induced oscillatory entrainment within amygdala-prefrontal circuits.
For theta-burst stimulation, theta-band activity (4-8 Hz) will be assessed.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Amplitude of cortico-cortical evoked potentials in amygdala-prefrontal circuits
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Cortico-cortical evoked potential (CCEP) amplitude will be quantified from local field potentials recorded through clinically implanted stereoelectroencephalography (SEEG) electrodes following single-pulse intracranial electrical stimulation.
CCEP amplitude will be used to assess effective connectivity between the amygdala and prefrontal cortex.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Theta/gamma band power in amygdala-prefrontal circuits
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Theta (4-8 Hz) and gamma (30-50 Hz) band power will be quantified from local field potentials recorded through clinically implanted stereoelectroencephalography (SEEG) electrodes in the amygdala and prefrontal cortex.
Theta/gamma-band power will be assessed during fear conditioning and extinction to characterize oscillatory neural activity within amygdala-prefrontal circuits.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Cross-frequency coupling in amygdala-prefrontal circuits
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Cross-frequency coupling will be quantified from local field potentials recorded through clinically implanted stereoelectroencephalography (SEEG) electrodes in the amygdala and prefrontal cortex.
Coupling between neural activity across different frequency bands, including phase-amplitude coupling between lower-frequency oscillations and high-frequency activity, will be assessed during resting state and fear processing to characterize cross-frequency neural interactions within amygdala-prefrontal circuits.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Skin conductance response amplitude during fear conditioning and extinction
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Skin conductance response (SCR) amplitude will be quantified during fear conditioning and extinction to assess autonomic responses to conditioned stimuli.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Pupil diameter during fear conditioning and extinction
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Pupil diameter will be quantified from eye-tracking recordings during fear conditioning and extinction to assess autonomic responses to conditioned stimuli.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Button press reaction time during fear conditioning and extinction
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Button press reaction time will be quantified during fear conditioning and extinction to assess behavioral responses to conditioned stimuli.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Subjective unpleasantness rating during fear conditioning and extinction
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Participants will rate the unpleasantness of the conditioned stimuli during fear conditioning and extinction.
Ratings will be used to quantify subjective emotional responses to the conditioned stimuli.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Heart rate during fear conditioning and extinction
Tidsramme: During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Heart rate will be quantified during fear conditioning and extinction to assess autonomic responses to conditioned stimuli.
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During research sessions, up to 2 hours per day for up to 4 days during the participant's hospital stay.
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Tao Xie, PhD, Washington University School of Medicine
Publikationer og nyttige links
Generelle publikationer
- Xie T, Foutz TJ, Adamek M, Swift JR, Inman CS, Manns JR, Leuthardt EC, Willie JT, Brunner P. Single-pulse electrical stimulation artifact removal using the novel matching pursuit-based artifact reconstruction and removal method (MPARRM). J Neural Eng. 2023 Dec 27;20(6):066036. doi: 10.1088/1741-2552/ad1385.
- Xie T, van Rooij SJH, Inman CS, Wang S, Brunner P, Willie JT. The case for hemispheric lateralization of the human amygdala in fear processing. Mol Psychiatry. 2025 May;30(5):2252-2259. doi: 10.1038/s41380-025-02940-2. Epub 2025 Feb 27.
- Xie T, van Rooij SJH, Sun S, Bryson NK, Demarest P, Park H, Maccotta L, Wang S, Brunner P, Willie JT. Right amygdala ablation reduces maladaptive negative interpretation bias and symptoms in a patient with post-traumatic stress disorder. Nat Commun. 2026 Jun 22;17(1):7868. doi: 10.1038/s41467-026-74099-5.
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 202507143
- K99MH144521 (U.S. NIH-bevilling/kontrakt)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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