Electrooculography

Publication Title: 
Journal of Psycholinguistic Research

In Mandarin Chinese, word meaning is partially determined by lexical tone (Wang, 1973). Previous studies suggest that lexical tone is processed as linguistic information and not as pure tonal information (Gandour, 1998; Van Lanker & Fromkin, 1973). The current study explored the online processing of lexical tones.

Author(s): 
Brown-Schmidt, Sarah
Canseco-Gonzalez, Enriqueta
Publication Title: 
Brain Research
Author(s): 
Carli, G.
Publication Title: 
Electroencephalography and Clinical Neurophysiology
Author(s): 
Carli, G.
Publication Title: 
European Journal of Pharmacology

Beagles, implanted with cortical and subcortical electrodes, were given etomidate i.v. (1 mg/kg) over a period of 10 sec. The effects on the EEG were compared with those obtained with 7 mg/kg of methohexital. Both compounds induced hypnosis for a duration of approximately 8 min. The EEGs showed a remarkable similarity. Visual inspection of the records as well as power spectrum analysis revealed a sustained theta-activity with underlying fast activity. The configuration of the waves was rather sharp.

Author(s): 
Wauquier, A.
van den Broeck, W. A.
Verheyen, J. L.
Janssen, P. A.
Publication Title: 
Waking and Sleeping

The present work is an analysis of 30 patients with Parkinsonian syndrome and 10 healthy persons during different functional states (aroused wakefulness, relaxed waking state, various phases and stages of nocturnal sleep, hypnosis). By means of polygraphic recordings and the Minnesota Multiphasic Personality Inventory (MMPI) it has been shown that motor, emotional and autonomic activity during sleep as well as EEG changes in parkinsonism are uniformly related to the nature and extent of the pathologic alterations in the non-specific, predominantly activating brain systems.

Author(s): 
Wein, A.
Golubev, V.
Yakhno, N.
Publication Title: 
Electroencephalography and Clinical Neurophysiology

The minute eye movements of 4 sleeping subjects were studied with a piezo-electric strain-gauge transducer. The frequency and amplitude of ocular microtremor activity diminished during sleep. Activity increased after auditory stimulation and with the appearance of a K complex in the EEG. The ocular microtremor activity also increased with the onset of rapid eye movement (REM). Low amplitude 'micronystagmoid' movements were observed at intervals throughout sleep. In contrast to the changes observed during sleep, ocular microtremor activity did not diminish during hypnosis.

Author(s): 
Coakley, D.
Williams, R.
Morris, J.
Publication Title: 
The American Journal of Psychiatry

Effects of hypnotic alterations of perception on amplitude of somatosensory event-related potentials were studied in 10 highly hypnotizable subjects and 10 subjects with low hypnotizability. The highly hypnotizable individuals showed significant decreases in amplitude of the P100 and P300 waveform components during a hypnotic hallucination that blocked perception of the stimulus. When hypnosis was used to intensify attention to the stimulus, there was an increase in P100 amplitude.

Author(s): 
Spiegel, D.
Bierre, P.
Rootenberg, J.
Publication Title: 
International Journal of Psychophysiology: Official Journal of the International Organization of Psychophysiology

This study evaluates the effects of hypnotic analgesia and hypnosis on bilateral EEG activity recorded from frontal, central and posterior areas during three painful electrical stimulation conditions: waking, hypnosis/no-analgesia, hypnosis/analgesia. Eight high-hypnotizable and eight low-hypnotizable (right handed) subjects participated in the experiment.

Author(s): 
De Pascalis, V.
Perrone, M.
Publication Title: 
International Journal of Psychophysiology: Official Journal of the International Organization of Psychophysiology

The study of changes in ERPs provoked by negative hypnotic hallucinations has thus far yielded contradictory results. Most previous studies have failed to separate specific changes in the processing of the hallucinated stimuli from non-specific changes in arousal due to hypnosis. The present study addresses this issue with the combination of two experimental effects in the task designed to test the hallucination: the noise-compatibility effect and the Simon effect.

Author(s): 
Lamas, J. R.
Valle-Inclán, F.
Publication Title: 
International Journal of Psychophysiology: Official Journal of the International Organization of Psychophysiology

The purpose of the present research was to find physiological and cognitive correlates of hypnosis, imaginative suggestibility and emotional experiences. After the administration of a standard hypnotic induction, the EEG and heart rate (HR) were recorded during self-generated happy and sad emotions using a relaxation condition as a control. Physiological recordings were also obtained during three eyes-open and eyes-closed baseline periods: (1) waking rest; (2) early-rest in hypnosis (just after the hypnotic induction); (3) late-rest hypnosis (at the end of hypnotic condition).

Author(s): 
De Pascalis, V.
Ray, W. J.
Tranquillo, I.
D'Amico, D.

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