Effects of Transcranial Magnetic Stimulation on Body Perception: No Evidence for Specificity of the Right Temporo-Parietal Junction.
Jérôme Daltrozzo, Boris Kotchoubey, Fatma Gueler, Ahmed A. Karim
Brain Topography September 1, 2016 DOI: 10.1007/s10548-016-0496-0 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Experimental study Peer reviewed |
|---|---|
| Sample size | 35 |
| Population | Healthy adults |
| Intervention | repetitive transcranial magnetic stimulation |
| Keywords | EEG Perception Somatosensory processing Transcranial magnetic stimulation Vestibular system |
| Key findings | Inhibitory 1 Hz rTMS increased abnormal body perception frequency and delayed own-body transformation task responses compared to excitatory 15 Hz rTMS, but the stimulation site (rTPJ vs. control) did not affect these outcomes. |
Abstract
Previous data suggest that the right temporo-parietal junction (rTPJ) may have a specific role in abnormal body perception (ABP), including out-of-body experience. We tested this hypothesis with inhibitory (1 Hz) and excitatory (15 Hz) repetitive transcranial magnetic stimulation (rTMS) of the rTPJ and a control site (CS, 5 cm posterior to the rTPJ along the lateral sulcus direction in Brodmann area 19R) in 35 healthy adults. ABP frequency was higher with 1 Hz than with 15 Hz rTMS but unaffected by the rTMS site (rTPJ/CS). Response to an own-body transformation task were delayed with 1 Hz compared to 15 Hz rTMS but also unaffected by rTMS site. ABP from rTMS at both sites induced electroencephalographic power decrease in all frequencies at left anterior and central cortical sites. Our data suggest that inhibitory rTMS can lead to ABP. However, the rTPJ may not play a specific role in this process.