DOI: 10.5281/zenodo.2654875
title: Raw Data from - Speech-ABRs in Cochlear Implant Recipients: Feasibility Study

description: <strong>Speech-ABRs in Cochlear Implant Recipients: Feasibility Study</strong>

Ghada BinKhamis, Emanuele Perugia, Martin O’Driscoll, Karolina Kluk

<strong>Please site the paper when using this dataset</strong> (DOI: 10.1080/14992027.2019.1619100)

 

<strong>Participant Recordings (BinKhamis et al Speech_ABR in CI raw data.zip)</strong>


	<strong>Description of raw EEG (speech-ABR) data main folder, subfolders, and raw EEG files</strong>

	
		<strong>Folder Information</strong>

		
			<strong>Main folder:</strong> Contains 12 subfolders with the raw data from 12 participants
			<strong>Subfolders:</strong> Each subfolder contains raw EEG recordings from one participant, subfolders names are:
			CI1, CI2, CI3, CI4, CI5, CI6, CI7, CI8, CI9, CI10, CI11, CI12
		
		
		<strong>Each participant subfolder contains four ‘.mat’ files:</strong>
		
			Each ‘.mat’ file starts with the participant ID
			
				CI1, CI2, CI3, CI4, CI5, CI6, CI7, CI8, CI9, CI10, CI11, CI12
			
			
			Followed by the stimulus: 40 da
			Followed by the stimulus polarity
			
				Pos for positive/standard
				Neg for negative (reversed polarity stimulus)
			
			
			Followed by the ipsilateral/implanted ear
			
				R for right ear
				L for left ear
			
			
			Finally the recording number for that polarity
			
				1 is the first recording
				2 is the second recording
			
			
		
		
		<strong>Example ‘.mat’ file name:</strong>
		
			<em>CI1 40 da Neg R1.mat:</em> Participant number 1, reversed polarity stimulus, implanted ear – right ear, recording number one
			<em>CI9 40 da Pos L2.mat:</em> Participant number 9, standard/positive polarity stimulus, implanted ear – left ear, recording number two
		
		
		<strong>Description of ‘.mat’ files that can be accessed and processed using MATLAB (MathWorks): </strong>Each ‘.mat’ file is a structure that contains the following fields:
		
			The first nine fields are informational, for example:
			
				xunits: ‘s’ indicates that the recording time window is in seconds, conversion to milliseconds would be required to plot the data in milliseconds
				start: ‘0’ indicates that both stimulus and recording start at 0 seconds
				points: <strong>13750</strong> is the number of sample points
				chans: 2 is the number of channels (channel 2 is the ipsilateral channel for participants with a Right CI, and channel 1 is the ipsilateral channel for participants with a Left CI)
				frames: 2500 is the number of epochs (repetitions)
			
			
			The last filed <strong>‘values’</strong> is what contains the raw EEG data (13750x2x2500)
			
				<strong>13750 </strong>is the number of samples
				<strong>2 </strong>is the number of channels (channel one is recorded from the left ear lobe (A1) and channel two is from the right ear lobe (A2))
				<strong>2500 </strong>is the number of epochs
			
			
		
		
	
	


<strong>Date of data collection: </strong>September 2017

 

<strong>Artificial-head artefact Recordings (BinKhamis et al Speech_ABR in CI artefact data.zip)</strong>


	<strong>This folder contains six artificial-head artefact recordings</strong>

	
		<strong>CI07_Artefact_40da_neg.mat</strong>

		
			Artefact based on closest approximation to CI07's MAP
			Recorded in response to a reversed polarity (neg) 40 ms [da]
		
		
		<strong>CI07_Artefact_40da_pos.mat</strong>
		
			Artefact based on closest approximation to CI07's MAP
			Recorded in response to a standard polarity (pos) 40 ms [da]
		
		
		<strong>CI08_Artefact_40da_neg.mat</strong>
		
			Artefact based on closest approximation to CI08's MAP
			Recorded in response to a reversed polarity (neg) 40 ms [da]
		
		
		<strong>CI08_Artefact_40da_pos.mat</strong>
		
			Artefact based on closest approximation to CI08's MAP
			Recorded in response to a standard polarity (pos) 40 ms [da]
		
		
		<strong>CI09_Artefact_40da_neg.mat</strong>
		
			Artefact based on closest approximation to CI09's MAP
			Recorded in response to a reversed polarity (neg) 40 ms [da]
		
		
		<strong>CI09_Artefact_40da_pos.mat</strong>
		
			Artefact based on closest approximation to CI09's MAP
			Recorded in response to a standard polarity (pos) 40 ms [da]<br>
			 
		
		
	
	
	<strong>Artefact recordings are in '.mat' format (MATLAB, MathWorks)</strong>
	
		Each '.mat' file is a 10988x2500 matrix
		
			<strong>10988</strong> is the number of sample points
			<strong>2500</strong> is the number of epochs (repetitions)
		
		
	
	


<strong>Artefacts recorded in: </strong>June 2018