Re: EEG compatible earphones ("Gallun, Frederick J. (Portland)" )

Subject: Re: EEG compatible earphones
From:    "Gallun, Frederick J. (Portland)"  <Frederick.Gallun@xxxxxxxx>
Date:    Fri, 13 Dec 2013 08:32:53 -0800

We use Etymotic ER2s or ER3s. The drivers are attached to the eartips by tubes, so stimulus artifact is reduced, but it is still a good idea to wrap the drivers with insulating tape to reduce electrical noise and be sure to position the drivers as far as possible from the recording site. ER2s have a flatter frequency response but achieve this with a higher impedance and thus I believe require more voltage. ER3s are able to achieve higher overall levels and may be more resistant to artifact. We are in the middle of confirming some of these details, but I'm pretty confident that the Etymotic inserts are the way to go, however it turns out. As indicated on the Etymotic website, there are special version with the insulation included, etc., available from ABR hardware providers such as IHS. We have a pair of those as well. ------------------------------------------------------- Frederick (Erick) Gallun, PhD Research Investigator, National Center for Rehabilitative Auditory Research Portland VA Medical Center Associate Professor, Dept. of Otolaryngology and Neuroscience Graduate Program Oregon Health & Science University -----Original Message----- From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of Michael Tangermann Sent: Friday, December 13, 2013 2:09 AM To: AUDITORY@xxxxxxxx Subject: Re: EEG compatible earphones -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear Maris, I like to use the Sennheiser PMX 200 model, a closed-back neckholder shape. It is great for EEG recordings, but unfortunately it is not available on the market any more. If you find a source, however, please let me know :-) Best, Michael On 12/12/2013 05:28 PM, Maris Skujevskis wrote: > Hi all, > > Can anyone suggest a pair of EEG compatible earphones? > > I am thinking of something that is: a) physically comfortable and not > in touch with the electrodes (i.e., earphones rather than headphones) > b) not introducing any electrical noise into the EEG recording c) > noise isolating > > > Thanks. > - -- !!! NEUE ADRESSE: Michael Tangermann Breite Str. 10 79183 Waldkirch Mob: +49.(0)163.7352468 - ---- PGP fingerprint: 7000 D4D3 44FA 1FC0 E3BF E590 56FB 763B 754B D339 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - iQEcBAEBAgAGBQJSqtzUAAoJEFb7djt1S9M5is8IALioyRGyKFYsaAYrZ7q7yNG5 2H+/xQDGD/UhkCUTNuoYxxs+gkHFlrYBL3OpGMILEbcw1Mw/Wmd2d/XZMDkSuHjT 3hvKS3OkRZB8IOjMZSHpyUoEHcN2EHPwdUaKgNol67elwZs/vP+bLW5rP4DetZIw 1uz9ICuwwtlgvJNu+CEBH3cLsp7lqJbOKwTcHQYSLCyoxMC+Wm7BeMwFosmvsgbe Y/cmSm7G4qR3dQG0CqRliMXtaGcXG6ILtY+8L0E1isQqewOgyjMbfKP8sVxhqweP mxa/LxMTxDxfcs+Bq4/46QlD3JQ/L3BfTxaDkbyNRkC60LAl+lKQ7PvNTyIG9w4= =h5O+ -----END PGP SIGNATURE-----

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