Long-range temporal correlation in Auditory Brainstem Responses to Spoken Syllable/da/

Abstract

The speech auditory brainstem response (sABR) is an objective clinical tool to diagnose particular impairments along the auditory brainstem pathways. We explore the scaling behavior of the brainstem in response to synthetic /da/ stimuli using a proposed pipeline including Multifractal Detrended Moving Average Analysis (MFDMA) modified by Singular Value Decomposition. The scaling exponent confirms that all normal sABR are classified into the non-stationary process. The average Hurst exponent is H = 0:77 ± 0:12 at 68% confidence interval indicating long-range correlation which shows the first universality behavior of sABR. Our findings exhibit that fluctuations in the sABR series are dictated by a mechanism associated with long-term memory of the dynamic of the auditory system in the brainstem level. The q-dependency of h(q) demonstrates that underlying data sets have multifractal nature revealing the second universality behavior of the normal sABR samples. Comparing Hurst exponent of original sABR with the results of the corresponding shuffled and surrogate series, we conclude that its multifractality is almost due to the long-range temporal correlations which are devoted to the third universality. Finally, the presence of long-range correlation which is related to the slow timescales in the subcortical level and integration of information in the brainstem network is confirmed.

Nonextensive realizations in interacting ion channels: Implications for mechano-electrical transducer mechanisms

“…Further investigations also emphasized that the pattern of firing auditory nerve action potentials forms a non-renewal point process over short as well as long time scales ( [41]). Recently, it was detected the presence of long-range temporal correlations in neural oscillations, considering the normal auditory system at the brainstem level ( [44]). Altogether, these findings strongly suggested that fractality and long-range correlations may be ubiquitous in hearing processing.…”

Radical Embodied Computation: Reproduction of Similarity by Analogy as an Order Generating Mechanism in Complex Systems

“…Given its organization, it seems reasonable to suggest that information about similarities and affinities of the sound pressure wave that exist across different scales of fluctuation can be decoded into neural firing rates by the auditory system. Recently, such evidence has been provided in a study that assessed brainstem responses to the spoken syllable /da/, which found the brainstem response to be multi-fractal in nature, characterized by the presence of long-range temporal correlations (Mozaffarilegha and Movahed, 2019).…”

Multifractal Mice: Measuring Task Engagement and Readiness-to-hand via Hand Movement

“…Multifractality is a measure of system complexity, developed in fluid mechanics, but now important in a range of fields [47], including physiology [6,34,55,75,83] and cognitive science [32,44,52,76]. Multifractality indicates the role of complex nonlinear interactions in a system's behaviour [42,52], and a large literature now demonstrates its presence in a wide range of human behaviours [15,16,23,33,35,46,57,65,76,77,84], often associated with adaptive flexibility [4,56,67].…”