Probing of brain states in real-time : introducing the ConSole environment

Hartmann, Thomas; Schulz, Hannah; Weisz, Nathan

Probing of brain states in real-time : introducing the ConSole environment

Dateien

Hartmann_2-wwelie3hkoo27.pdfGröße: 1.65 MBDownloads: 258

Datum

2011

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Psychologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Frontiers in Psychology. Frontiers Research Foundation. 2011, 2, 36. eISSN 1664-1078. Available under: doi: 10.3389/fpsyg.2011.00036

Zusammenfassung

Recent years have seen huge advancements in the methods available and used in neuroscience employing EEG or MEG. However, the standard approach is to average a large number of trials for experimentally defined conditions in order to reduce intertrial-variability, i.e., treating it as a source of “noise.” Yet it is now more and more accepted that trial-to-trial fluctuations bear functional significance, reflecting fluctuations of “brain states” that predispose perception and action. Such effects are often revealed in a pre-stimulus period, when comparing response variability to an invariant stimulus. However such offline analyses are disadvantageous as they are correlational by drawing conclusions in a post hoc-manner and stimulus presentation is random with respect to the feature of interest. A more direct test is to trigger stimulus presentation when the relevant feature is present. The current paper introduces Constance System for Online EEG (ConSole), a software package capable of analyzing ongoing EEG/MEG in real-time and presenting auditory and visual stimuli via internal routines. Stimulation via external devices (e.g., transcranial magnetic stimulation) or third-party software (e.g., PsyScope X) is possible by sending TTL-triggers. With ConSole it is thus possible to target the stimulation at specific brain states. In contrast to many available applications, ConSole is open-source. Its modular design enhances the power of the software as it can be easily adapted to new challenges and writing new experiments is an easy task. ConSole is already pre-equipped with modules performing standard signal processing steps. The software is also independent from the EEG/MEG system, as long as a driver can be written (currently two EEG systems are supported). Besides a general introduction, we present benchmark data regarding performance and validity of the calculations used, as well as three example applications of ConSole in different settings. ConSole can be downloaded at: http://console-kn.sf.net.

Fachgebiet (DDC)

150 Psychologie

Zitieren

ISO 690

HARTMANN, Thomas, Hannah SCHULZ, Nathan WEISZ, 2011. Probing of brain states in real-time : introducing the ConSole environment. In: Frontiers in Psychology. Frontiers Research Foundation. 2011, 2, 36. eISSN 1664-1078. Available under: doi: 10.3389/fpsyg.2011.00036

BibTex

@article{Hartmann2011Probi-50405,
  year={2011},
  doi={10.3389/fpsyg.2011.00036},
  title={Probing of brain states in real-time : introducing the ConSole environment},
  volume={2},
  journal={Frontiers in Psychology},
  author={Hartmann, Thomas and Schulz, Hannah and Weisz, Nathan},
  note={Article Number: 36}
}

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