Abstract:
:In contrast to the single-channel dimensional complexity, the global dimensional complexity is calculated from a multichannel EEG. The intention with the method is to measure the spatial distribution of information processing in the brain. The method seems to be of interest in psychopharmacological research, but the interpretation of the results in physiological terms is rather difficult. To get a more detailed information on the physiological significance of the EEG complexity measures, the influence of well-known physiological factors was studied in a group of 14 healthy subjects aged from 1.5 to 61 years. It was found that the correlation dimension was somewhat higher in older individuals, but the correlation with age was not statistically significant. However, the global correlation dimension was significantly lower during full alertness than during drowsiness. These results might reflect the changes in spatial structure of information processing, a high complexity suggesting a 'disorganisation' during drowsiness. As regards the age-dependent changes of the correlation dimension, the spatial 'flexibility' of information processing was also studied, using the differences between the 'alert' and 'drowsy' parts of the same EEG as indicator. It was found that the differences 'drowsy minus alert' were significantly related to age. A plausible interpretation seems to be that the spatial distribution of information processing is more changeable, or more flexible, in adults than in children.
journal_name
Neuropsychobiologyjournal_title
Neuropsychobiologyauthors
Matousek M,Wackermann J,Palus M,Berankova A,Albrecht V,Dvorak Idoi
10.1159/000119171subject
Has Abstractpub_date
1995-01-01 00:00:00pages
47-52issue
1eissn
0302-282Xissn
1423-0224journal_volume
31pub_type
杂志文章abstract::Gamma-aminobutyric acid-B (GABAB) binding sites labelled with [3H]GABA were determined in postmortem frontal cortex samples of 20 control subjects and 16 suicides. The suicide group was further subdivided according to the method of suicide and the existence of depressive symptoms prior to death. No significant differe...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118893
更新日期:1992-01-01 00:00:00
abstract::Performance on temporal discrimination of time intervals in the range of milliseconds is interpreted by the assumption of an internal clock; the higher the clock rate the better the temporal resolution of the internal clock will be, which is equivalent to more accuracy in timing of brief intervals. Although there is s...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1159/000118899
更新日期:1992-01-01 00:00:00
abstract::Plasma noradrenaline (NA), adrenaline (Ad), dopamine (DA), platelet serotonin (p5HT), free serotonin (f5HT), glucose, heart rate (HR) and blood pressure (BP) were measured before and after an oral load of glucose (OGTT) in 100 normal humans. One sham-feeding test was performed in every subject 2-3 weeks before OGTT. A...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118889
更新日期:1992-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118292
更新日期:1986-01-01 00:00:00
abstract::The prevalence of an abnormal response to the 1 mg dexamethasone suppression test (DST) was examined in 40 inpatients suffering from a major depressive disorder (MDD), 17 inpatients suffering from schizophrenia, and 30 normal controls. 23.5% of the schizophrenics were DST nonsuppressors compared to 52.5% of MDD patien...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118252
更新日期:1986-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000431095
更新日期:2015-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章,评审
doi:10.1159/000119310
更新日期:1996-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章,评审
doi:10.1159/000049254
更新日期:2002-01-01 00:00:00
abstract::The analysis of the results obtained in different tests--sleep studies, cortical and hippocampal EEG activity, PGO-R spikes--in rats or in cats allows the characterization of different classes of drugs and to establish the relative efficacy of psychoactive drugs in these models. Moreover, the sequential spectral analy...
journal_title:Neuropsychobiology
pub_type: 杂志文章,评审
doi:10.1159/000117972
更新日期:1983-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000355295
更新日期:2013-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000071212
更新日期:2003-01-01 00:00:00
abstract::Gamma oscillations (>30 Hz) in the brain are involved in attention, perception and memory. They are altered in various pathological states, as well as by neuropharmaceuticals, so that they are of interest in drug and clinical investigations. However, when the human electroencephalogram is recorded on the scalp, this n...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000382023
更新日期:2015-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118576
更新日期:1989-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118824
更新日期:1992-01-01 00:00:00
abstract::Past epidemiological and clinical research has identified depression as the most common psychiatric disorder associated with headache. The present study carried out in a neurology headache clinic showed that the major associations were with current anxiety disorders, especially panic and related conditions. These find...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000119182
更新日期:1995-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 历史文章,杂志文章
doi:10.1159/000118407
更新日期:1987-01-01 00:00:00
abstract::The concentrations of adenosine 3'5'-cyclic monophosphate (cyclic AMP) in cerebrospinal fluid (CSF) in manic-melancholic patients were studied. As control groups served patients suffering from other psychiatric disorders as well as neruological and orthopedic patients. The results showed no difference between the vari...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000117548
更新日期:1976-01-01 00:00:00
abstract:OBJECTIVE:Previous results indicated a facilitated transcallosal inhibition via the corpus callosum (CC) in alexithymic male students. This study investigates transcallosal inhibition in alexithymic and nonalexithymic psychiatric inpatients. METHOD:Transcallosal inhibition was elicited by means of transcranial magneti...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000092218
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Derangements of the gut microbiome have been linked to increased systemic inflammation and central nervous system disorders, including schizophrenia. This systematic review thus aimed to investigate the hypothesis that probiotic supplementation improves schizophrenia symptoms. METHODS:By using the keywords ...
journal_title:Neuropsychobiology
pub_type: 杂志文章,meta分析
doi:10.1159/000498862
更新日期:2019-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000076416
更新日期:2004-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章,评审
doi:10.1159/000119000
更新日期:1993-01-01 00:00:00
abstract::We have previously shown that the tilt aftereffect (TAE) appears to respond to changes in central dopaminergic function. In this study, the TAE was investigated during the preovulatory and the premenstrual phases of the menstrual cycle. Results in the preovulatory phase mimicked those previously found associated with ...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000119484
更新日期:1990-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000026575
更新日期:1999-01-01 00:00:00
abstract::The relation between fasting, a.m. plasma prolactin and plasma/homovanillic acid (HVA) was studied in 9 healthy males on one occasion and in 9 healthy females on two occasions (in the follicular and luteal phase of the menstrual cycle). There was a significant inverse correlation between plasma HVA and plasma prolacti...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118303
更新日期:1986-01-01 00:00:00
abstract::During the last few years, the working group 'Psychophysiology' of the Association for Methodology and Documentation in Psychiatry (AMDP) discussed the possibility of the establishment of defined EEG modules in psychiatry. It was the aim to create a common data pool in order to be able to have access to larger data se...
journal_title:Neuropsychobiology
pub_type: 指南,杂志文章
doi:10.1159/000119370
更新日期:1997-01-01 00:00:00
abstract::The effects of febarbamat and pipamperon on agitational and aggressive states of patients with diffuse psycho-organic syndrome were compared in a double-blind study on patients over 60 years of age requiring nursing care. Such disorders, particularly in the field of psychiatric gerontology, represent an increasing pro...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000118075
更新日期:1984-01-01 00:00:00
abstract::We agree with the conclusions of a recent article in this journal [James, Neuropsychobiology 1994;30:124-125] that studies on the psychoactive effects of caffeine need to take into account the possibility that the results obtained might represent merely the reversal of deleterious effects of caffeine deprivation rathe...
journal_title:Neuropsychobiology
pub_type: 杂志文章,评审
doi:10.1159/000119192
更新日期:1995-01-01 00:00:00
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journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000087557
更新日期:2005-01-01 00:00:00
abstract::Actions of the new antiepileptic drug lamotrigine (LTG) were characterized using extracellular and whole cell patch clamp recordings from rat CA1 and CA3 pyramidal cells in vitro. The results suggest that LTG, beside its previously described effect on the fast sodium inward current, also modulates - presumably voltage...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000026528
更新日期:1998-10-01 00:00:00
abstract::The relationship between clinical effect of imipramine (IP) in 39 depressed patients and biochemical distinction, serum drug levels, and diagnostic classification was investigated retrospectively. Based on pretreatment plasma ratios of tryptophan and tyrosine to competing amino acids, which reflect the availability of...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118182
更新日期:1985-01-01 00:00:00