PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 433533

Comparison of two alpha activity detection methods [proceedings].

P Lánský·Z Bohdanecký·M Indra·T Radil-Weiss
View original source ↗Export metadata ↓

Abstract

The source did not provide an abstract. Follow the original record for more information.

Explore related subjects

Alpha RhythmElectroencephalographyHumansComparative StudyJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

P Lánský, Z Bohdanecký, M Indra, T Radil-Weiss. 1979. Comparison of two alpha activity detection methods [proceedings].. https://pubmed.ncbi.nlm.nih.gov/433533/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1979

Alpha-pattern coma in a 2-year-old child.

An EEG of a two-year-old child with Reye's syndrome complicated by prolonged hypoglycemia showed continuous, diffusely distributed, 8- to 9-Hz, well-modulated alpha activity while the patient was comatose. Continuous monitoring of EEG showed gradual reduction of alpha activity and the appearance of moderate-amplitude delta waves within the next 18 hours. Subsequent EEGs showed electrocerebral silence. The EEG features and their evolution resembled those described in postanoxic "alpha-pattern coma" in adults. A diffuse cortical-subcortical insult, possibly due to hypoglycemia, may be responsible for the generation of diffuse alpha activity in our case. Because of its transient nature, immediate and serial EEG studies following the acute cerebral insult may be necessary to demonstrate this pattern in children.

Alpha Rhythm↗
PubMed1979

Death anxiety: "state" or "trait"?

Investigated relative effects of hypnosis, alpha biofeedback, prestige suggestion, and silence in attenuating experimentally induced increases in death anxiety. Forty female undergraduate Ss at Louisiana State University were tested on four measures of death anxiety: "Emotional" associations to "death" words, association response latencies to "death" vs. "neutral" words, Death Anxiety Scale, and Death Concern Scale. Ss then were assigned to four treatments: (1) Hypnosis, with anxiolytic post-hypnotic relaxation suggestions; (2) Nonhypnotic anxiolytic prestige suggestions; (3) EEG alphacontingent biofeedback; and (4) a 15-minute waiting period. After treatments, Ss viewed a tape-slide presentation that emphasized personal death and overestimated its probability from various causes. Ss then were retested on death anxiety measures, forms of which were counterbalanced within groups. Analysis of variance (at .05 and .01 confidence levels) failed to differentiate groups on either increases or decreases of death anxiety. It was concluded that death anxiety may be a "trait" as opposed to a "state" phenomenon.

Alpha Rhythm↗
PubMed1979

Prognostic information from EEG and ICP monitoring after severe closed head injuries in the early post-traumatic phase. A clinical and experimental study.

Neither the EEG investigations on the first post-traumatic day after severe enclosed brain injury nor evaluation of the clinical finding on the first day permit a pronosis. Measurement of intracranial pressure is necessary for monitoring of intracranial complications, but can only make a contribution to prognosis when a critical intracranial pressure is reached. There is a slight correlation between the severity of the EEG alteration and the later outcome on the second day. If an alpha EEG is found on the first day, the prognosis in all cases is not so poor as assumed by other authors.

Alpha Rhythm↗