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Effect of electroconvulsive shock treatment on the opioid-mediated inhibition of serotonin release in rat hippocampal slices
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Effects of Haloperidol on the expression of lymphocyte dopamine receptor mRNA in the rat
No full textIF 1.5
Effects of single and repeated electroconvulsive shock on local cerebral glucose utilization in the conscious rat
No full textOutcome of carotid artery occlusion is predicted by cerebrovascular reactivity
No full textBACKGROUND AND PURPOSE: The purpose of this study was to investigate the
possibility of obtaining prognostic indications in patients with internal carotid
occlusion on the basis of intracranial hemodynamic status, presence of previous
symptoms of cerebrovascular failure, and baseline characteristics.
METHODS: Cerebral hemodynamics were studied with transcranial Doppler
ultrasonography. Cerebrovascular reactivity to apnea was calculated by means of
the breath-holding index (BHI) in the middle cerebral arteries. Sixty-five
patients with internal carotid artery occlusion were followed-up prospectively
(median, 24 months), 23 patients were asymptomatic and 42 symptomatic (20 with
transient ischemic attack and 22 with stroke).
RESULTS: During the follow-up period, 11 symptomatic patients and 1 asymptomatic
patient had another ischemic event ipsilateral to carotid occlusion. Among
factors considered, only lower BHI values in the middle cerebral arteries
ipsilateral to carotid occlusion and older age were significantly associated with
the risk of developing symptoms (P=0.002 and P=0.003, respectively; Cox
regression multivariate analysis). Based on our data, a cut point of the BHI
value for distinguishing between pathological and normal cerebrovascular
reactivity was determined to be 0.69. All patients except one, who developed TIA
or stroke during the follow-up period, had BHI values ipsilateral to carotid
occlusion of <0.69.
CONCLUSIONS: These data suggest that impaired cerebrovascular reactivity is
predictive for cerebral ischemic events in patients with carotid occlusion
CT indications for surgery and evaluation of prognosis in patients with spontaneous intracerebral haematomas
No full textFunctional correlates of nicotine administration: similarity with drugs of abuse.
No full texti.f. (2001) 3.49
CT indications for surgery and evaluation of prognosis in patients with spontaneous intracerebral haematomas
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