5 found
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  1.  29
    Transcranial direct current stimulation of the motor cortex in waking resting state induces motor imagery.Jana Speth, Clemens Speth & Trevor A. Harley - 2015 - Consciousness and Cognition 36 (C):298-305.
  2.  38
    The borderlands of waking: Quantifying the transition from reflective thought to hallucination in sleep onset.Clemens Speth & Jana Speth - 2016 - Consciousness and Cognition 41 (C):57-63.
  3.  27
    A New Measure of Hallucinatory States and a Discussion of REM Sleep Dreaming as a Virtual Laboratory for the Rehearsal of Embodied Cognition.Clemens Speth & Jana Speth - 2018 - Cognitive Science 42 (1):311-333.
    Hallucinatory states are experienced not only in connection with drugs and psychopathologies but occur naturally and spontaneously across the human circadian cycle: Our nightly dreams bring multimodal experiences in the absence of adequate external stimuli. The current study proposes a new, tighter measure of these hallucinatory states: Sleep onset, REM sleep, and non-REM sleep are shown to differ with regard to motor imagery indicating interactions with a rich imaginative world, and cognitive agency that could enable sleepers to recognize their hallucinatory (...)
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  4.  12
    Auditory Verbal Experience and Agency in Waking, Sleep Onset, REM, and Non‐REM Sleep.Jana Speth, Trevor A. Harley & Clemens Speth - 2017 - Cognitive Science 41 (3):723-743.
    We present one of the first quantitative studies on auditory verbal experiences (“hearing voices”) and auditory verbal agency (inner speech, and specifically “talking to (imaginary) voices or characters”) in healthy participants across states of consciousness. Tools of quantitative linguistic analysis were used to measure participants’ implicit knowledge of auditory verbal experiences (VE) and auditory verbal agencies (VA), displayed in mentation reports from four different states. Analysis was conducted on a total of 569 mentation reports from rapid eye movement (REM) sleep, (...)
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  5.  27
    Mental time travel to the future might be reduced in sleep.Jana Speth, Astrid M. Schloerscheidt & Clemens Speth - 2017 - Consciousness and Cognition 48 (C):180-189.