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Causal Role of the Aperiodic Signal for Working Memory

Florida State University · NCT06126809

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Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18–35 · All sexes
Healthy volunteers
Accepted
Study type
Interventional · Not applicable
Target enrollment
30
US sites recruiting
1
Study start
March 25, 2024
Record last updated
August 31, 2026

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

Working memory (WM) is the ability to hold relevant information in mind in the absence of sensory input. The capacity for WM is a foundation for cognitive control and higher cognitive function more broadly. Previous research demonstrated that during the delay period of WM tasks, oscillatory electrical activity in the prefrontal cortex in the theta-frequency band (4-8 Hz) increased in amplitude. However, other groups found that the slope of the aperiodic signal in the brain was positively correlated with individual differences in WM capacity. Since low-frequency power and a steeper slope of the aperiodic signal are confounded in many analyses, it is not clear whether the slope of the aperiodic signal or the amplitude of low-frequency oscillations underlie WM capacity. With many studies investigating the causal role of theta oscillations in WM, the purpose of this project is to investigate the role of the aperiodic signal in WM performance.

Being studied: Steep-tRAS; Flat-tRAS; Sham-tRAS

Conditions: Executive Dysfunction

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full criteria

Inclusion Criteria

  • Between the ages of 18 and 35
  • Able to provide informed consent
  • Normal or corrected-to-normal vision
  • Willing to comply with all study procedures and be available for the duration of the study
  • Ability to speak, read and understand English without a translator
  • Not color-blind

Exclusion Criteria

  • ADHD/ADD (currently under treatment)
  • Neurological disorder and conditions
  • Medical or neurological illness or treatment for a medical disorder that could interfere with study participation, e.g., unstable cardiac disease, HIV/AIDS, malignancy, liver or renal impairment
  • Prior brain surgery
  • Any brain devices/implants, including cochlear implants and aneurysm clips
  • History of traumatic brain injury
  • (For females) Pregnant
  • Anything that, in the opinion of the investigator, would place the participant at increased risk or preclude the participant's full compliance with or completion of the study
  • Current use of medications know to produce specific EEG activity known to disrupt interpretations of the findings including but not limited to: benzodiazepines, antipsychotics, antiepileptics and central nervous system stimulants

Recruiting US locations

  • Florida State University

    Tallahassee, FL 32306

    Site contact: Justin Riddle, PhD · 850-645-2389 · jriddle@fsu.edu

Study contacts (from the official record)

  • Justin Riddle, PhD · 850-645-2389 · jriddle@fsu.edu
  • Lauren Jackson, BS · 850-644-9869 · lauren.jackson@fsu.edu
All healthy volunteers studies in Florida →
Causal Role of the Aperiodic Signal for Working Memory (NCT06126809) | Bored Studies