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Re: [AUDITORY] EEG purchase

Hello all,

Curious if anyone has any experience in comparing the OpenBCI products (Like the Mark IV) compared to the Biosemi Active Two system. Curious what the difference between the two products would be for cortical measures. Currently the OpenBCI products cannot sample as fast as Biosemi, but OpenBCI is fast enough for cortical measures. I prefer the price point and openness of OpenBCI 🙂

Best,
Rav

-----------------------------------------------------------------------------------
Ravinderjit Singh, PhD
MD/PhD Student
Purdue University - Weldon School of Biomedical EngMark IVineering  
Indiana University - School of Medicine​
From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx> on behalf of Kaganovich, Natalya B <kaganovi@xxxxxxxxxx>
Sent: Friday, August 19, 2022 10:38 AM
To: AUDITORY@xxxxxxxxxxxxxxx <AUDITORY@xxxxxxxxxxxxxxx>
Subject: Re: [AUDITORY] EEG purchase
 

Hello Carlos,

 

I have been using the Biosemi Active Two system with children ages 7-14 or so and with adults for about 10 years. I love it. I only have 32 electrodes, which was an intentional choice. I find the application quite fast and easy – to speed up the process, we use 2 people to apply gel into electrode holders and to plug in electrodes. It takes about 12-15 minutes start to finish. I worked with Neuroscan during the post-doc. It may have changed by now, but the data quality with Biosemi is amazing compared to Neuroscan. Lloyd Smith and his team at CortechSolutions (the Biosemi distributor in the US) have been extremely supportive and respond promptly. Whenever we need to repair electrodes, we get them back within a week or so. Lloyd is extremely knowledgeable and was able to guide us through unexpected issues when the did arise.

 

I will mention a couple of things to consider:

  1. The wires are rather delicate. I believe the later version of electrode sets have the connection between the wire and the electrode strengthened. We do have both graduate and undergraduate students using the electrodes but provide extensive training on handling. We only had a few breakages.
  2. Biosemi does not have in-house data processing software. This may or may not be an issue for you – many labs now use Matlab-based programs for data analysis. I use EMSE, which is now also owned by CortechSolutions.

Good luck with your lab set up!

 

Natalya

 

Natalya Kaganovich, PhD

Associate Professor

Department of Speech, Language, and Hearing Sciences

Department of Psychological Sciences

Purdue University

kaganovi@xxxxxxxxxx

(765)494-4233

 

 

 

From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx> On Behalf Of Carlos Benitez-Barrera
Sent: Friday, August 12, 2022 11:21 AM
To: AUDITORY@xxxxxxxxxxxxxxx
Subject: EEG purchase

 

---- External Email: Use caution with attachments, links, or sharing data ----

 

Dear Auditory List,

 

I am planning on purchasing an EEG system for my new lab at UW-Madison, USA. I have been in contact with several EEG providers, and I’m still undecisive on which system would be best for my lab. I’m familiar with Neuroscan and EGI, but I’m actually leaning towards Biosemi or Brain Products (Brain and Vision in the US). I run simple auditory paradigms with children (ages 3 to 14) and adults. The main characteristics that I’m looking for are (not necessarily in order):

  • Ease of use
  • Prep cap time (important to minimize with children)
  • Customer support
  • Signal quality

 

I’m shooting for a 64-channel system. Also, I’m still hesitating between saline caps or gel caps. I heard that the Biosemi caps despite of being gel based are very fast to get going. 

 

Anyway, I’m just looking for some advice from any of you working with these systems. Any experiences or recommendations will help!

 

Thank you in advance for your taking your time to reply!

 

Sincerely,

Carlos