NCT07635940

Brief Summary

This clinical trial will examine whether transcranial magnetic stimulation (TMS), a noninvasive form of brain stimulation, can influence social cognition, cognitive processing, and brain function in adults with elevated psychopathic traits. The study will also evaluate the safety and feasibility of delivering TMS in this population. Participants will be randomly assigned to receive either active TMS or sham (placebo-like) TMS. The study will compare outcomes between participants receiving active versus sham TMS and will evaluate changes from before to after TMS exposure. Participants will:

  • Complete a baseline magnetic resonance imaging (MRI) brain scan.
  • Receive three single-session TMS interventions.
  • Complete a post-intervention MRI brain scan.
  • Complete assessments of social cognition.
  • Complete assessments of cognitive processing. The primary objectives are to determine whether TMS can influence social cognition, cognitive processing, and functional brain organization and connectivity in adults with elevated psychopathic traits.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
51mo left

Started Jun 2026

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress1%
Jun 2026Aug 2030

First Submitted

Initial submission to the registry

May 29, 2026

Completed
3 days until next milestone

Study Start

First participant enrolled

June 1, 2026

Completed
8 days until next milestone

First Posted

Study publicly available on registry

June 9, 2026

Completed
4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2030

Expected
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2030

Last Updated

June 11, 2026

Status Verified

May 1, 2026

Enrollment Period

4 years

First QC Date

May 29, 2026

Last Update Submit

June 9, 2026

Conditions

Keywords

PsychopathyTranscranial Magnetic StimulationTheta Burst StimulationNeuromodulationSocial CognitionEmotion RecognitionTheory of MindSocial Decision MakingCognitive ProcessingCognitive ControlExecutive FunctionFunctional ConnectivityResting-State fMRIDorsolateral Prefrontal CortexTemporal Parietal Junction

Outcome Measures

Primary Outcomes (2)

  • Social Cognition Task Battery Performance

    Performance on a social cognition task battery assessing facial emotion recognition (Emotion Recognition Task), perspective taking (Visual Perspective Taking Task), theory of mind (Movie Assessment of Social Cognition Task), and social decision-making (Altruistic/Antisocial game). Accuracy and reaction time will be analyzed using mixed-effects models to compare active stimulation versus sham stimulation across tasks. Higher accuracy values indicate better performance, whereas lower reaction times indicate better performance.

    within 10 minutes after the intervention.

  • Serial and Parallel Cognitive Processing Task Performance

    Performance on the Miller serial/parallel cognitive processing task. Trial-level accuracy and/or reaction time will be analyzed using mixed-effects models to compare active stimulation versus sham stimulation across serial and parallel processing conditions.

    within 10 minutes after the intervention.

Secondary Outcomes (1)

  • Change in Resting-State Functional Connectivity

    From the date of baseline fMRI until the first TMS session, assessed 2 times (baseline and post-TMS) up to 2 months after the baseline session. Post-TMS fMRI scan will be conducted within 30 minutes after the intervention.

Study Arms (3)

active dlPFC sham TPJ

ACTIVE COMPARATOR

Subjects in this group will receive active continuous theta burst stimulation (cTBS) to the individually defined region of the dlPFC and sham to the TPJ.

Device: continuous theta burst stimulation (cTBS)

active TPJ sham dlPFC

ACTIVE COMPARATOR

Subjects in this group will receive active intermittent theta burst stimulation to the individually defined region of the TPJ and sham to the dlPFC.

Device: Intermittent theta burst stimulation (iTBS)

sham

SHAM COMPARATOR

Subjects in this group will receive sham stimulation to the dlPFC and TPJ.

Device: Sham

Interventions

Continuous theta burst stimulation (cTBS) will be delivered using transcranial magnetic stimulation (TMS) targeting the right dorsolateral prefrontal cortex (dlPFC). cTBS is a patterned form of repetitive TMS designed to modulate neural activity within targeted brain networks involved in cognitive control and social cognition. Stimulation targets will be individualized using participant-specific neuroimaging data.

active dlPFC sham TPJ
ShamDEVICE

Sham transcranial magnetic stimulation will be delivered using procedures designed to mimic the sensory experience of active stimulation without producing the intended neuromodulatory effects. Stimulation targets and study procedures will mirror those used in the active intervention arms.

sham

Intermittent theta burst stimulation (iTBS) will be delivered using transcranial magnetic stimulation (TMS) targeting the right temporoparietal junction (TPJ). iTBS is a patterned form of repetitive TMS designed to modulate neural activity within targeted brain networks involved in social cognition and perspective taking. Stimulation targets will be individualized using participant-specific neuroimaging data

active TPJ sham dlPFC

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • years.
  • Elevated psychopathy as defined by the self-report psychopathy scale.
  • IQ \>= 80.
  • No prior diagnosis or current risk of Autism as defined by the autism spectrum quotient.
  • Negative urine drug screen.
  • At least 7 Days of abstinence from substance use (excluding nicotine)
  • Able to provide informed consent.
  • No change in psychiatric medication regimen, or medication-free, for 4 weeks before study.
  • Adequate English proficiency to complete study procedures and assessments.

You may not qualify if:

  • Current or lifetime DSM-5 psychotic disorder, schizophrenia, schizoaffective disorder, bipolar disorder, or autism spectrum disorder.
  • IQ \< 80.
  • Clinically significant neurological disorder or medical illness that would make study participation unsafe, including a history of seizures or significant cardiovascular disease.
  • Clinically significant abnormality identified on baseline MRI.
  • Contraindication to MRI or inability to undergo MRI scanning.
  • Current pregnancy or breastfeeding.
  • History of head injury resulting in loss of consciousness greater than 15 minutes.
  • Diagnosis of dementia.
  • Current prescription for benzodiazepines or anticonvulsants.
  • Metal implants or non-removable metal objects above the waist.
  • Lifetime history of prior clinical treatment with transcranial magnetic stimulation (TMS).
  • Serious risk of suicide or homicide.
  • Unable or unwilling to comply with study procedures.
  • History of intractable migraine.
  • Claustrophobia or inability to tolerate enclosed spaces required for MRI procedures.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Colorado Anschutz Medical Campus

Aurora, Colorado, 80045, United States

Location

Related Publications (5)

  • Tillem S, Weinstein H, Baskin-Sommers A. Psychopathy is associated with an exaggerated attention bottleneck: EEG and behavioral evidence from a dual-task paradigm. Cogn Affect Behav Neurosci. 2021 Aug;21(4):881-893. doi: 10.3758/s13415-021-00891-z. Epub 2021 Apr 5.

    PMID: 33821459BACKGROUND
  • Jeurissen D, Sack AT, Roebroeck A, Russ BE, Pascual-Leone A. TMS affects moral judgment, showing the role of DLPFC and TPJ in cognitive and emotional processing. Front Neurosci. 2014 Feb 13;8:18. doi: 10.3389/fnins.2014.00018. eCollection 2014.

    PMID: 24592204BACKGROUND
  • Saxe R, Kanwisher N. People thinking about thinking people. The role of the temporo-parietal junction in "theory of mind". Neuroimage. 2003 Aug;19(4):1835-42. doi: 10.1016/s1053-8119(03)00230-1.

    PMID: 12948738BACKGROUND
  • Drayton LA, Santos LR, Baskin-Sommers A. Psychopaths fail to automatically take the perspective of others. Proc Natl Acad Sci U S A. 2018 Mar 27;115(13):3302-3307. doi: 10.1073/pnas.1721903115. Epub 2018 Mar 12.

    PMID: 29531085BACKGROUND
  • Song Z, Jones A, Corcoran R, Daly N, Abu-Akel A, Gillespie SM. Psychopathic traits and theory of mind task performance: A systematic review and meta-analysis. Neurosci Biobehav Rev. 2023 Aug;151:105231. doi: 10.1016/j.neubiorev.2023.105231. Epub 2023 May 10.

    PMID: 37172923BACKGROUND

Related Links

MeSH Terms

Conditions

Antisocial Personality Disorder

Condition Hierarchy (Ancestors)

Personality DisordersMental Disorders

Central Study Contacts

Drew E Winters, PhD.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Participants, TMS technicians administering stimulation, investigators, and outcomes assessors will be masked to intervention assignment. Active and sham stimulation assignments will be implemented using study procedures designed to preserve masking across intervention arms.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Participants will be randomly assigned to one of three parallel study arms: continuous theta burst stimulation (cTBS) targeting the right dorsolateral prefrontal cortex, intermittent theta burst stimulation (iTBS) targeting the right temporoparietal junction, or sham stimulation. Participants will remain in their assigned intervention arm throughout the study
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 29, 2026

First Posted

June 9, 2026

Study Start

June 1, 2026

Primary Completion (Estimated)

June 1, 2030

Study Completion (Estimated)

August 1, 2030

Last Updated

June 11, 2026

Record last verified: 2026-05

Data Sharing

IPD Sharing
Will share

Upon study completion, neuroimaging and behavioral data will be shared via the brain imaging data sharing database OpenNeuro. Metadata for the study will be included, such as the study protocol. All publications from this data by the PI or the PI's lab will first preregister the analysis, and all accepted publications will share the analytic code with a link to the GitHub repository in the publication

Shared Documents
STUDY PROTOCOL, SAP, ANALYTIC CODE

Locations