Auditory Stimulation Systems

With easy and accessible controls, the communication console allows two-way simultaneous patient communication and full flexibility of audio settings. As an alternative to the built-in microphone and speaker, the technician can choose between different headsets according to individual preferences. The console also allows for recording of oral responses from the patient using a fiber-optic patient microphone.

 

The S14 fMRI-Compatible Insert Earphones from Sensimetrics Corporation are designed to provide both high-quality acoustic stimulation and hearing protection from scanner noise. They are small enough to fit within any headcoil, and can be covered with circumaural muffs for added protection if the coil allows.

The S14 system takes audio (especially .wav files), and uses a third-party audio amplifier for amplification before transmission to the subject in the scanner. The transformer/ earphone combination will require no more than 3 watts per channel, which is met by a large number of small audio amplifiers. We use the Pyle Home PCA1 amplifier for this purpose. To ensure accurate frequency reproduction, we recommend use of the custom EQ Filtering software from Sensimetrics to modify your .wav files before playing them to a subject. This software runs on any Windows PC, and will ensure accurate frequency reproduction for our particular set of earphones. The EQ Filtering software is available from center staff.