+1 Recommend
0 collections
      • Record: found
      • Abstract: found
      • Article: not found

      Electrodynamic headphones and woofers for application in magnetic resonance imaging scanners.

      Medical physics
      Acoustics, Biophysical Phenomena, Biophysics, Ear Protective Devices, Electronics, Medical, instrumentation, Equipment Design, Evaluation Studies as Topic, Humans, Magnetic Resonance Imaging, adverse effects, Noise, prevention & control

      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


          Electrodynamic speakers compatible with (functional) magnetic resonance imaging (MRI) are described. The speakers magnets are removed, their function is replaced by the scanner's magnetic field, resulting in an uncommon but efficient operation. The method can be used with headphones as well as woofers. Functional MRI is not associated with any known biological risks, but as a method for visualization of task-specific activation of brain regions it is undesirably noisy. Thus, it requires both noise protection and efficient sound transmission systems for delivering acoustic stimuli to subjects. Woofers could possibly be used in active noise-control systems. The speakers described in this paper can be used for either task.

          Related collections

          Author and article information


          Comment on this article