Auditory temporal resolution is linked to resonance frequency of the auditory cortex

Baltus, Alina; Herrmann, Christoph S.

doi:10.1016/j.ijpsycho.2015.08.003

Cited by 50 publications

(60 citation statements)

References 46 publications

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“…Cervenka et al (2013) found early cortical auditory eGBRs to be test-retest reliable, regardless of general individual auditory performance. The same stability has been revealed for the preferred frequency of the auditory cortex (Baltus and Herrmann, 2015). A comparison ( Fig.…”

Section: Resonance Frequencies Of the Auditory Cortex And Higher Areassupporting

confidence: 77%

“…Based on this assumption we conducted a study (Fig. 2) where a behavioral measure of individual auditory temporal resolution (between channel gap detection thresholds; Phillips et al, 1997) could be linked to individual preferred frequencies of the auditory cortex (Baltus and Herrmann, 2015). This link between behavioral performance level and preferred frequency in the gamma range presumably reflects the relevance of a neural oscillator for the behavioral performance in gap detection tasks.…”

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confidence: 99%

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The importance of individual frequencies of endogenous brain oscillations for auditory cognition – A short review

Baltus

Herrmann

2016

Brain Research

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Section: Resonance Frequencies Of the Auditory Cortex And Higher Areassupporting

confidence: 77%

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confidence: 99%

The importance of individual frequencies of endogenous brain oscillations for auditory cognition – A short review

Baltus

Herrmann

2016

Brain Research

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“…Since oscillations in the gamma range are the dominant rhythmic activation pattern in the auditory cortex (Giraud et al, 2007; Gross et al, 2013; Baltus and Herrmann, 2015) and this oscillation pattern is strongly associated with the processing of rapidly changing acoustic features (Poeppel, 2003; Giraud and Poeppel, 2012), it seems plausible that auditory tRNS amplifies the inherent resonance frequency resulting in increased neural SNR and improved perception of time-critical acoustic information. This notion is underpinned by the null result on the processing of spectral acoustic features, a function typically associated with neural oscillations in the theta band (4–8 Hz; Luo and Poeppel, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…In this vein, Baltus and Herrmann (2015) recently demonstrated a functional link between auditory temporal resolution abilities and the individual “preferred” frequency of the auditory cortex. The close association between auditory perception and endogenous gamma frequency indicates that the frequency of an individuals’ oscillatory activation pattern i.e., the resonance frequency, determines the pace at which the auditory system optimally processes incoming sensory information.…”

Section: Introductionmentioning

confidence: 99%

Transcranial Random Noise Stimulation (tRNS) Shapes the Processing of Rapidly Changing Auditory Information

Rufener

Ruhnau

Heinze

et al. 2017

Front. Cell. Neurosci.

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Neural oscillations in the gamma range are the dominant rhythmic activation pattern in the human auditory cortex. These gamma oscillations are functionally relevant for the processing of rapidly changing acoustic information in both speech and non-speech sounds. Accordingly, there is a tight link between the temporal resolution ability of the auditory system and inherent neural gamma oscillations. Transcranial random noise stimulation (tRNS) has been demonstrated to specifically increase gamma oscillation in the human auditory cortex. However, neither the physiological mechanisms of tRNS nor the behavioral consequences of this intervention are completely understood. In the present study we stimulated the human auditory cortex bilaterally with tRNS while EEG was continuously measured. Modulations in the participants’ temporal and spectral resolution ability were investigated by means of a gap detection task and a pitch discrimination task. Compared to sham, auditory tRNS increased the detection rate for near-threshold stimuli in the temporal domain only, while no such effect was present for the discrimination of spectral features. Behavioral findings were paralleled by reduced peak latencies of the P50 and N1 component of the auditory event-related potentials (ERP) indicating an impact on early sensory processing. The facilitating effect of tRNS was limited to the processing of near-threshold stimuli while stimuli clearly below and above the individual perception threshold were not affected by tRNS. This non-linear relationship between the signal-to-noise level of the presented stimuli and the effect of stimulation further qualifies stochastic resonance (SR) as the underlying mechanism of tRNS on auditory processing. Our results demonstrate a tRNS related improvement in acoustic perception of time critical auditory information and, thus, provide further indices that auditory tRNS can amplify the resonance frequency of the auditory system.

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“…A large body of evidence supports the idea of a decisive role of ongoing gamma band oscillations (30–70 Hz) in auditory cortex areas for auditory processing (Brosch, Budinger, & Scheich, ; Cervenka et al., ; Lakatos et al., ; Schadow et al., ; Traub, Bibbig, LeBeau, Cunningham, & Whittington, ). Recent research provides evidence for the assumption that not only different frequency bands can be associated with different perceptual processes but also frequency differences within the gamma band are physiologically relevant on an individual basis (Baltus & Herrmann, , ; Baltus et al., ; Zaehle, Lenz, Ohl, & Herrmann, ). Unlike in vision, in audition, the determination of frequency of relevant neuronal oscillations cannot be estimated from resting state activity but must be derived from indirect measures (Lampl & Yarom, ).…”

Section: Introductionmentioning

confidence: 99%

Transcranial alternating current stimulation modulates auditory temporal resolution in elderly people

Baltus

Vosskuhl

Boetzel

et al. 2018

Eur J of Neuroscience

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Recent research provides evidence for a functional role of brain oscillations for perception. For example, auditory temporal resolution seems to be linked to individual gamma frequency of auditory cortex. Individual gamma frequency not only correlates with performance in between-channel gap detection tasks but can be modulated via auditory transcranial alternating current stimulation. Modulation of individual gamma frequency is accompanied by an improvement in gap detection performance. Aging changes electrophysiological frequency components and sensory processing mechanisms. Therefore, we conducted a study to investigate the link between individual gamma frequency and gap detection performance in elderly people using auditory transcranial alternating current stimulation. In a within-subject design, twelve participants were electrically stimulated with two individualized transcranial alternating current stimulation frequencies: 3 Hz above their individual gamma frequency (experimental condition) and 4 Hz below their individual gamma frequency (control condition), while they were performing a between-channel gap detection task. As expected, individual gamma frequencies correlated significantly with gap detection performance at baseline and in the experimental condition, transcranial alternating current stimulation modulated gap detection performance. In the control condition, stimulation did not modulate gap detection performance. In addition, in elderly, the effect of transcranial alternating current stimulation on auditory temporal resolution seems to be dependent on endogenous frequencies in auditory cortex: Elderlies with slower individual gamma frequencies and lower auditory temporal resolution profit from auditory transcranial alternating current stimulation and show increased gap detection performance during stimulation. Our results strongly suggest individualized transcranial alternating current stimulation protocols for successful modulation of performance.

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Auditory temporal resolution is linked to resonance frequency of the auditory cortex

Cited by 50 publications

References 46 publications

The importance of individual frequencies of endogenous brain oscillations for auditory cognition – A short review

The importance of individual frequencies of endogenous brain oscillations for auditory cognition – A short review

Transcranial Random Noise Stimulation (tRNS) Shapes the Processing of Rapidly Changing Auditory Information

Transcranial alternating current stimulation modulates auditory temporal resolution in elderly people

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