DOI: 10.5061/dryad.f357r
title: Data from: Concurrent temporal channels for auditory processing: oscillatory neural entrainment reveals segregation of function at different scales

description: Natural sounds convey perceptually relevant information over multiple
 timescales, and the necessary extraction of multi-timescale information
 requires the auditory system to work over distinct ranges. The simplest
 hypothesis suggests that temporal modulations are encoded in an equivalent
 manner within a reasonable intermediate range. We show that the human
 auditory system selectively and preferentially tracks acoustic dynamics
 concurrently at 2 timescales corresponding to the neurophysiological theta
 band (4–7 Hz) and gamma band ranges (31–45 Hz) but, contrary to
 expectation, not at the timescale corresponding to alpha (8–12 Hz), which
 has also been found to be related to auditory perception. Listeners heard
 synthetic acoustic stimuli with temporally modulated structures at 3
 timescales (approximately 190-, approximately 100-, and approximately
 30-ms modulation periods) and identified the stimuli while undergoing
 magnetoencephalography recording. There was strong intertrial phase
 coherence in the theta band for stimuli of all modulation rates and in the
 gamma band for stimuli with corresponding modulation rates. The alpha band
 did not respond in a similar manner. Classification analyses also revealed
 that oscillatory phase reliably tracked temporal dynamics but not
 equivalently across rates. Finally, mutual information analyses
 quantifying the relation between phase and cochlear-scaled correlations
 also showed preferential processing in 2 distinct regimes, with the alpha
 range again yielding different patterns. The results support the
 hypothesis that the human auditory system employs (at least) a 2-timescale
 processing mode, in which lower and higher perceptual sampling scales are
 segregated by an intermediate temporal regime in the alpha band that
 likely reflects different underlying computations.
description: Processed behavioral and
 neurophysiological data 1The data file is a zip
 file, which is split into 19 files using 'split' command in Mac.
 The zip file is titled 'ProcessedData.zip'. The zip file
 contains seven folders and the folders contain processed data used to
 compute main results and to create all figures in the manuscript. 1)
 Behavioral confusion matrix 2) ITPC and induced power 3) Phase and power
 data for classification and mutual information analysis 4) Selected
 channels for each subject 5) Shuffled ITPC 6) Sound materials 7) Temporal
 averaged data Each folder (except Sound materials) contains data files of
 15 subjects. The subject is indicated by ‘sub#’ in the filename. In each
 folder, there is a ‘readme’ text file that illustrates data information.
 All the datasets are of matlab format and could be processed in MATLAB.
 Some datasets are formatted in fieldtrip data structure and the
 information about the data structure can be found here:
 www.fieldtriptoolbox.org Further information on data processing can be
 found in the Method section of the manuscript. The raw data files and the
 denoised data files can be required by contacting Xiangbin Teng,
 xiangbin.teng@gmail.com.xaaProcessed behavioral and neurophysiological data 2xabProcessed behavioral and neurophysiological data 3xacProcessed behavioral and neurophysiological data 4xadProcessed behavioral and neurophysiological data 5xaeProcessed behavioral and neurophysiological data 6xafProcessed behavioral and neurophysiological data 7xagProcessed behavioral and neurophysiological data 8xahProcessed behavioral and neurophysiological data 9xaiProcessed behavioral and neurophysiological data 10xajProcessed behavioral and neurophysiological data 11xakProcessed behavioral and neurophysiological data 12xalProcessed behavioral and neurophysiological data 13xamProcessed behavioral and neurophysiological data 14xanProcessed behavioral and neurophysiological data 15xaoProcessed behavioral and neurophysiological data 16xapProcessed behavioral and neurophysiological data 17xaqProcessed behavioral and neurophysiological data 18xarProcessed behavioral and neurophysiological data 19xasSupplementary Materials: Subject 1-4Subject 1-4.zipSubject 5-8