1. Measuring consciousness in dreams: The lucidity and consciousness in dreams scale.Ursula Voss, Karin Schermelleh-Engel, Jennifer Windt, Clemens Frenzel & Allan Hobson - 2013 - Consciousness and Cognition 22 (1):8-21.
    In this article, we present results from an interdisciplinary research project aimed at assessing consciousness in dreams. For this purpose, we compared lucid dreams with normal non-lucid dreams from REM sleep. Both lucid and non-lucid dreams are an important contrast condition for theories of waking consciousness, giving valuable insights into the structure of conscious experience and its neural correlates during sleep. However, the precise differences between lucid and non-lucid dreams remain poorly understood. The construction of the Lucidity and Consciousness in (...)
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  2.  31
    Insight and Dissociation in Lucid Dreaming and Psychosis.Ursula Voss, Armando D’Agostino, Luca Kolibius, Ansgar Klimke, Silvio Scarone & J. Allan Hobson - 2018 - Frontiers in Psychology 9.
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    Waking and dreaming: Related but structurally independent. Dream reports of congenitally paraplegic and deaf-mute persons.Ursula Voss, Inka Tuin, Karin Schermelleh-Engel & Allan Hobson - 2011 - Consciousness and Cognition 20 (3):673-687.
    Models of dream analysis either assume a continuum of waking and dreaming or the existence of two dissociated realities. Both approaches rely on different methodology. Whereas continuity models are based on content analysis, discontinuity models use a structural approach. In our study, we applied both methods to test specific hypotheses about continuity or discontinuity. We contrasted dream reports of congenitally deaf-mute and congenitally paraplegic individuals with those of non-handicapped controls. Continuity theory would predict that either the deficit itself or compensatory (...)
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    A differentiating empirical linguistic analysis of dreamer activity in reports of EEG-controlled REM-dreams and hypnagogic hallucinations.Jana Speth, Clemens Frenzel & Ursula Voss - 2013 - Consciousness and Cognition 22 (3):1013-1021.
    We present Activity Analysis as a new method for the quantification of subjective reports of altered states of consciousness with regard to the indicated level of simulated motor activity. Empirical linguistic activity analysis was conducted with dream reports conceived immediately after EEG-controlled periods of hypnagogic hallucinations and REM-sleep in the sleep laboratory. Reports of REM-dreams exhibited a significantly higher level of simulated physical dreamer activity, while hypnagogic hallucinations appear to be experienced mostly from the point of passive observer. This study (...)
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    A mind to go out of: Reflections on primary and secondary consciousness.Allan Hobson & Ursula Voss - 2011 - Consciousness and Cognition 20 (4):993-997.
    Dreaming and waking are two brain-mind states, which are characterized by shared and differentiated properties at the levels of brain and consciousness. As part of our effort to capitalize on a comparison of these two states we have applied Edelman’s distinction between primary and secondary consciousness, which we link to dreaming and waking respectively. In this paper we examine the implications of this contrastive analysis for theories of mental illness. We conclude that while dreaming is an almost perfect model of (...)
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    A template model of embodiment while dreaming: Proposal of a mini-me.Judith Koppehele-Gossel, Ansgar Klimke, Karin Schermelleh-Engel & Ursula Voss - 2016 - Consciousness and Cognition 46:148-162.
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    Investigating Nuisance Effects Induced in EEG During tACS Application.Romain Holzmann, Judith Koppehele-Gossel, Ursula Voss & Ansgar Klimke - 2021 - Frontiers in Human Neuroscience 15.
    Transcranial alternating-current stimulation in the frequency range of 1–100 Hz has come to be used routinely in electroencephalogram studies of brain function through entrainment of neuronal oscillations. It turned out, however, to be highly non-trivial to remove the strong stimulation signal, including its harmonic and non-harmonic distortions, as well as various induced higher-order artifacts from the EEG data recorded during the stimulation. In this paper, we discuss some of the problems encountered and present methodological approaches aimed at overcoming them. To (...)
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