[Eeglablist] ABR Latency - Headphones

[Makoto Miyakoshi]

> Entymotic ER 3a

This must be Etymotic Research. They sell high-quality ear-canal earphones
too. ER4 is a legend!

Makoto

On Wed, Jul 6, 2016 at 10:57 AM, Herbert J Gould (hgould) <
hgould at memphis.edu> wrote:

> ABR stimuli is typically a 100 microsecond electrical square wave
> presented through Entymotic ER 3a earphones.  The earphone has a
> polyurethane tube to create a time delay of .8 msec between the onset of
> the square wave and the arrival of the sound at the ear.  This avoids the
> stimulus artifact that you obtain with earphones that are directly covering
> the ear.    This combination will result in a acoustic click centered in
> the 2 to 4  kHz region arriving at the cochlea once earphone, ear canal and
> middle ear resonance is taken into account.   You can obtain the ER 3a with
> several different ohm ratings so be sure to match it to your equipment.
>
>
>
>
>
>
>
> Herbert Jay Gould, Ph.D.
>
> Associate Professor
>
> [image: Description: UofM logo]
>
> The University of Memphis School of Communication Sciences and Disorders
> 4055 N. Park Loop
> Memphis, TN 38152
>
> 901.678.5837 | memphis.edu/csd
>
> Hgould at Memphis.edu
>
>
>
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> *From:* eeglablist-bounces at sccn.ucsd.edu [mailto:
> eeglablist-bounces at sccn.ucsd.edu] *On Behalf Of *Christian Fonseca
> *Sent:* Tuesday, July 05, 2016 4:33 PM
> *To:* eeglablist at sccn.ucsd.edu
> *Subject:* [Eeglablist] ABR Latency - Headphones
>
>
>
> Hi!
>
>
>
> I'm trying to do a program to acquire data for ABR latencies, but I don't
> know which headphones can I use. Now, I'm using gamer headphones, but I saw
> that in hospitals uses another type of headphones with sound insulation
> into the plastic earpad (Which brand are those headphones?)
>
>
>
> Thanks for your answers,
>
>
>
> Regards,
>
>
>
> Christian Fonseca
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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