Frontiers in Human Neuroscience
2014
Jennifer Windt, Dominic L Harkness, Bigna Lenggenhager
The contrast between self- and other-produced tickles, as a special case of sensory attenuation for self-produced actions, has long been a target of empirical research. While in standard wake states it is nearly impossible to tickle oneself, there are interesting exceptions. Notably, participants awakened from REM (rapid eye movement-) sleep dreams are able to tickle themselves. So far,...
Frontiers in Psychology
2014
Daniel Erlacher, Melanie Schädlich, Tadas Stumbrys et al.
48 citations
The relationship between time in dreams and real time has intrigued scientists for centuries. The question if actions in dreams take the same time as in wakefulness can be tested by using lucid dreams where the dreamer is able to mark time intervals with prearranged eye movements that can be objectively identified in EOG recordings. Previous research showed an equivalence of time for counting...
Frontiers in Psychology
2014
Martin Dresler, Leandra Eibl, Christian Fischer et al.
52 citations
Consciousness is a multifaceted concept; its different aspects vary across species, vigilance states, or health conditions. While basal aspects of consciousness like perceptions and emotions are present in many states and species, higher-order aspects like reflective or volitional capabilities seem to be most pronounced in awake humans. Here we assess the experience of volition across different...
October 16, 2013
Tadas Stumbrys, Daniel Erlacher, Michael Schredl
Lucid dream and nightmare frequencies vary greatly between individuals and to assess these differences reliable instruments are needed. The present study aimed to examine the reliability of eight-point scales for measuring lucid dream and nightmare frequencies. The scales were administered twice (with a four-week interval) to 93 sport students. A re-test reliability for the lucid dream...
Consciousness and Cognition
September 8, 2013
Tadas Stumbrys, Daniel Erlacher, Michael Schredl
88 citations
Recent studies suggest that lucid dreaming (awareness of dreaming while dreaming) might be associated with increased brain activity over frontal regions during rapid eye movement (REM) sleep. By applying transcranial direct current stimulation (tDCS), we aimed to manipulate the activation of the dorsolateral prefrontal cortex (DLPFC) during REM sleep to increase dream lucidity. Nineteen...
Medical Hypotheses
July 6, 2013
Sérgio Mota-Rolim, John Fontenele Araújo
50 citations
Several lines of evidence converge to the idea that rapid eye movement sleep (REMS) is a good model to foster our understanding of psychosis. Both REMS and psychosis course with internally generated perceptions and lack of rational judgment, which is attributed to a hyperlimbic activity along with hypofrontality. Interestingly, some individuals can become aware of dreaming during REMS, a...
Frontiers in Human Neuroscience
2013
Sérgio Mota-Rolim, Zé H. Targino, Bryan C. Souza et al.
42 citations
During sleep, humans experience the offline images and sensations that we call dreams, which are typically emotional and lacking in rational judgment of their bizarreness. However, during lucid dreaming (LD), subjects know that they are dreaming, and may control oneiric content. Dreaming and LD features have been studied in North Americans, Europeans and Asians, but not among Brazilians, the...
September 11, 2012
Madoka Takahara
目的 夢見と人格特性との関連については,数多くの研 究がなされてきたが,一致した見解には至っていない。夢 の中で夢を見ているという事実を本人が自覚しているとき, 特に明晰夢と呼ばれる。近年,明晰夢は訓練によって見ら れるようになるといわれており,注目を集めている。実験 I の調査では,大学生における明晰夢の頻度と自己効力感 といった人格特性について,質問紙による調査をおこなっ た。さらに,Neider ら(2010)の行った研究をベースに,アイ オワ・ギャンブリング課題を用いて,夢の明晰度の高さと課 題処理能力の関連を検討した(実験II)。アイオワ・ギャン ブリング課題はBecharaら(1994)によって考案された,前頭 前皮質の機能を調べるための神経心理検査法である。 方法 (実験I)調査対象は,大学生233名であった。質 問紙には自己効力感尺度 (GSE尺度),対処方略尺度...
Consciousness and Cognition
September 1, 2012
Tadas Stumbrys, Daniel Erlacher, Melanie Schädlich et al.
In lucid dreams the dreamer is aware of dreaming and often able to influence the ongoing dream content. Lucid dreaming is a learnable skill and a variety of techniques is suggested for lucid dreaming induction. This systematic review evaluated the evidence for the effectiveness of induction techniques. A comprehensive literature search was carried out in biomedical databases and specific...
Sleep
June 29, 2012
Martin Dresler, Renate Wehrle, Victor I. Spoormaker et al.
271 citations
STUDY OBJECTIVES: To investigate the neural correlates of lucid dreaming. DESIGN: Parallel EEG/fMRI recordings of night sleep. SETTING: Sleep laboratory and fMRI facilities. PARTICIPANTS: Four experienced lucid dreamers. INTERVENTIONS: N/A. MEASUREMENTS AND RESULTS: Out of 4 participants, one subject had 2 episodes of verified lucid REM sleep of sufficient length to be analyzed by fMRI. During...