4 papers in the library · publishing 1998-1999
Perceptual and Motor Skills April 1, 1999 Mitsuo Hayashi, Kohich Katoh, Tadao Hori
The relationships between hypnagogic imagery and EEG activity were studied. 7 subjects (4 women and 3 men) teported the content of hypnagogic imagety every minute and the hypnagogic EEGs were classified into 5 stages according to Hori's modified criteria. The content of the hypnagogic imagery changed as a function of the hypnagogic EEG stages.
Psychiatry and Clinical Neurosciences April 1, 1999 Nanae Michida, Akiyuki Ebata, Hideki Tanaka et al.
In the previous study, during the vertex sharp wave period (hypnagogic EEG stage 4), negative components (N300, N550) were dominant at Fz and Cz in contrast to the positive component (P400) being prominent at the other areas, Pz, Oz, T5 and T6. There is no agreement regarding P400 properties during the hypnagogic period. In this study, using topographic mapping, we found that two negative...
Psychiatry and Clinical Neurosciences April 1, 1998 Hideki Tanaka, Mitsuo Hayashi, Tadao Hori
Abstract The present study examined the topographic characteristics of hypnagogic electroencephalography (EEG), using topographic mapping of EEG power and coherence corresponding to nine EEG stages (Hori's hypnagogic EEG stages). EEG stages 1 and 2, the EEG stages 3–8, and the EEG stage 9 each correspond with standard sleep stage W, 1 and 2, respectively. The dominant topographic components of...
Psychiatry and Clinical Neurosciences April 1, 1998 Nanae Michida, Mitsuo Hayashi, Tadao Hori
Abstract It is hypothesized that when hypnagogic imagery occurs, an appropriate attention may allocate to the imagery, resulting in the allocation of attention to the external tone stimuli being diminished. N3 amplitude of event related potentials (ERP) obtained a significant difference between the conditions with and without imagery. Arousal level of behavior and electroencephalography were...