![]() In contrast to many available applications, ConSole is open-source. With ConSole it is thus possible to target the stimulation at specific brain states. Stimulation via external devices (e.g., transcranial magnetic stimulation) or third-party software (e.g., PsyScope X) is possible by sending TTL-triggers. The current paper introduces C onstance System for On line EEG (ConSole), a software package capable of analyzing ongoing EEG/MEG in real-time and presenting auditory and visual stimuli via internal routines. A more direct test is to trigger stimulus presentation when the relevant feature is present. 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. Such effects are often revealed in a pre-stimulus period, when comparing response variability to an invariant stimulus. 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. Recent years have seen huge advancements in the methods available and used in neuroscience employing EEG or MEG. ![]() ![]() 2 Zukunftskolleg, Universität Konstanz, Konstanz, Germany.1ĝepartment of Psychology, Universität Konstanz, Konstanz, Germany.
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