TY - JOUR
T1 - A measure of acoustic noise generated from transcranial magnetic stimulation coils
AU - Dhamne, Sameer C.
AU - Kothare, Raveena S.
AU - Yu, Camilla
AU - Hsieh, Tsung Hsun
AU - Anastasio, Elana M.
AU - Oberman, Lindsay
AU - Pascual-Leone, Alvaro
AU - Rotenberg, Alexander
N1 - Funding Information:
This work was supported by the Translational Research Program (TRP) at Boston Children's Hospital (AR), and the Berenson-Allen Center for Noninvasive Brain Stimulation (AR, APL, LO).
PY - 2014
Y1 - 2014
N2 - The intensity of sound emanating from the discharge of magnetic coils used in repetitive transcranial magnetic stimulation (rTMS) can potentially cause acoustic trauma. Per Occupational Safety and Health Administration (OSHA) standards for safety of noise exposure, hearing protection is recommended beyond restricted levels of noise and time limits. We measured the sound pressure levels (SPLs) from four rTMS coils with the goal of assessing if the acoustic artifact levels are of sufficient amplitude to warrant protection from acoustic trauma per OSHA standards. We studied the SPLs at two frequencies (5 and 10 Hz), three machine outputs (MO) (60, 80 and 100%), and two distances from the coil (5 and 10 cm). We found that the SPLs were louder at closer proximity from the coil and directly dependent on the MO. We also found that in all studied conditions, SPLs were lower than the OSHA permissible thresholds for short (8 h) exposure.
AB - The intensity of sound emanating from the discharge of magnetic coils used in repetitive transcranial magnetic stimulation (rTMS) can potentially cause acoustic trauma. Per Occupational Safety and Health Administration (OSHA) standards for safety of noise exposure, hearing protection is recommended beyond restricted levels of noise and time limits. We measured the sound pressure levels (SPLs) from four rTMS coils with the goal of assessing if the acoustic artifact levels are of sufficient amplitude to warrant protection from acoustic trauma per OSHA standards. We studied the SPLs at two frequencies (5 and 10 Hz), three machine outputs (MO) (60, 80 and 100%), and two distances from the coil (5 and 10 cm). We found that the SPLs were louder at closer proximity from the coil and directly dependent on the MO. We also found that in all studied conditions, SPLs were lower than the OSHA permissible thresholds for short (8 h) exposure.
KW - Acoustic noise
KW - Sound pressure levels
KW - Transcranial magnetic stimulation
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U2 - 10.1016/j.brs.2014.01.056
DO - 10.1016/j.brs.2014.01.056
M3 - Article
C2 - 24582370
AN - SCOPUS:84899923702
SN - 1935-861X
VL - 7
SP - 432
EP - 434
JO - Brain Stimulation
JF - Brain Stimulation
IS - 3
ER -