Trials / Completed
CompletedNCT03756584
Probing TBS-induced Neural Plasticity and Associated Effects on Learning
- Status
- Completed
- Phase
- N/A
- Study type
- Interventional
- Enrollment
- 75 (actual)
- Sponsor
- Dr Georg Kranz · Academic / Other
- Sex
- All
- Age
- 18 Years – 35 Years
- Healthy volunteers
- Accepted
Summary
Recent animal research indicates that excitatory brain stimulation opens a time window of increased neural plasticity that permits remodeling of neural representations. Repetitive transcranial magnetic stimulation (rTMS) may thus facilitate learning of new associations by reducing proactive interference but human research is missing. Therefore, it is the aim of this study to investigate the effects of intermittent theta-burst stimulation (iTBS), a potent form of excitatory brain stimulation, on associative memory. Twenty right handed healthy participants will receive 3 minutes of iTBS or sham stimulation of the left lateral parietal cortex after memorizing a set of 20 face-word associations. Recall capacity will be tested directly before and after stimulation. Participants will then learn a new combination of associations using the same set of stimuli, followed by an evaluation of their recall capacity. It is hypothesized that iTBS compared to sham stimulation will reduce recall capacity directly after the stimulation but increase recall capacity of the newly learned associations due to reduced proactive interference. This study may not only pave the way towards a new understanding of the mechanism of action of brain stimulation, but can also help in developing new treatment strategies for neuropsychiatric disorders.
Conditions
Interventions
| Type | Name | Description |
|---|---|---|
| DEVICE | Theta-burst stimulation | iTBS comprises 3-pulse 50-Hz bursts, applied every 200 ms (at 5 Hz) as described previously (Huang, Edwards et al. 2005) and consists of 2-second trains with an inter-train-interval of 8 seconds. We will repeat trains (30 pulses; 10 bursts) for 20 times to reach a total number of 600 pulses per session (3x10x20) |
Timeline
- Start date
- 2019-03-03
- Primary completion
- 2020-12-03
- Completion
- 2020-12-03
- First posted
- 2018-11-28
- Last updated
- 2021-08-17
Locations
1 site across 1 country: Hong Kong
Source: ClinicalTrials.gov record NCT03756584. Inclusion in this directory is not an endorsement.