Tracking Short-Term Auditory Cortical Plasticity during Classical Conditioning Using Frequency-Tagged Stimuli

Weisz, Nathan; Kostadinov, Branislav; Dohrmann, Katalin; Hartmann, Thomas; Schlee, Winfried

Tracking Short-Term Auditory Cortical Plasticity during Classical Conditioning Using Frequency-Tagged Stimuli

Dateien

Weisz_CerCor07.pdfGröße: 787.3 KBDownloads: 458

Datum

2007

Autor:innen

Weisz, Nathan

Kostadinov, Branislav

Dohrmann, Katalin

Hartmann, Thomas

Schlee, Winfried

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Cerebral cortex. 2007, 17(8), pp. 1867-1876. Available under: doi: 10.1093/cercor/bhl095

Zusammenfassung

Animal studies indicate that short-term plasticity during classical conditioning is a fast process. The temporal details of this process in humans are unknown. We employed amplitude-modulated tones in order to elicit the steady-state field (SSF). Conditioned stimulus (CS1) and CS2 had a common low carrier frequency, however, differed in their high-frequency component. Low and high frequencies within one tone were modulated at 29 and 45 Hz, respectively. Mean fast Fourier transformation analysis of each single trial allowed extraction of the cortical response to these modulation frequencies, allowing to track cortical responses trial by trial. Mutilation pictures were used as unconditioned stimulus. Furthermore, heart rate and contingency awareness were assessed. Our main findings are the following: 1) A rapid (within 5 trials) enhancement of the amplitude of the high frequencies in contrast to the low frequency, while the high frequencies differentiated later (toward end of acquisition). This partially replicates rapid plasticity as shown before in animals. 2) Those participants who were less aware of the stimulus contingencies showed a relative heart rate acceleration and greater SSF increase to the CS1. This could possibly imply a stronger early amygdala activation in these participants, which then mediates the development of conditioning-related reorganization in auditory cortical areas.

Fachgebiet (DDC)

150 Psychologie

Schlagwörter

auditory steady-state fields, classical conditioning, contingency awareness, frequency tagging, magnetoencephalography

Zitieren

ISO 690

WEISZ, Nathan, Branislav KOSTADINOV, Katalin DOHRMANN, Thomas HARTMANN, Winfried SCHLEE, 2007. Tracking Short-Term Auditory Cortical Plasticity during Classical Conditioning Using Frequency-Tagged Stimuli. In: Cerebral cortex. 2007, 17(8), pp. 1867-1876. Available under: doi: 10.1093/cercor/bhl095

BibTex

@article{Weisz2007Track-10532,
  year={2007},
  doi={10.1093/cercor/bhl095},
  title={Tracking Short-Term Auditory Cortical Plasticity during Classical Conditioning Using Frequency-Tagged Stimuli},
  number={8},
  volume={17},
  journal={Cerebral cortex},
  pages={1867--1876},
  author={Weisz, Nathan and Kostadinov, Branislav and Dohrmann, Katalin and Hartmann, Thomas and Schlee, Winfried}
}

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Universitätsbibliographie

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