An individual differences investigation of the relations among life event stress, working memory capacity, and mind wandering: A preregistered replication-extension study.

Klein and Boals (2001a, Applied Cognitive Psychology, 15[5], 565-579, Experiments 1 and 2) found that working memory capacity correlated negatively with perceived negative life event stress and speculated the relation may be driven by thoughts produced from these experiences. Here, we sought to replicate the association between working memory capacity and perceived negative life experience and to assess potential mediators of this association such as mind wandering propensity, rumination propensity, and the sum of negatively valenced mind wandering reports. In this preregistered replication and extension study, with data collected from 356 subjects (ns differ among analyses), we found no evidence suggesting that perceived negative life stress is associated with working memory capacity.

Comparing the PHQ-9 to the Multidimensional Behavioral Health Screen in Predicting Depression-Related Symptomatology in a Primary Medical Care Sample.

Depression is the most common form of psychopathology affecting people in the US. It is commonly diagnosed and treated in primary medical care settings, creating a need for a reliable, quick self-report tool used for the assessment of depression in this context. There is an emerging shift in the way psychopathology is conceptualized, as the field begins to transition from a categorical, syndrome-based model to a dimensional model.

Characterization of an extremely motile cellular network in the rotifer Asplanchna spp. Structure, kinetics, and the cytoskeleton.

The pseudocoelomic body cavity of the rotifer Asplanchna spp. contains free cells that form a highly dynamic, three-dimensional polygonal network of filopodia. Using video-enhanced differential interference contrast microscopy, we have qualitatively and quantitatively characterized the motion types involved with network motility: (1) filopodial junctions are displaced laterally at 10.

Chronic depression of glucose metabolism in postischemic rat brains.

Background And Purpose: The present investigation aimed to quantify functional activity in rat brains after long-term recovery from transient forebrain ischemia.

Methods: With the use of the [14C]2-deoxyglucose method, local cerebral glucose utilization was measured in 62 cortical and subcortical brain regions in postischemic rat brains. Transient forebrain ischemia of 10 minutes' duration was induced by clamping the common carotid arteries and simultaneously lowering blood pressure to 40 mm Hg.

Local cerebral glucose utilization in perfusion-fixed rat brains.

Local cerebral glucose utilization (LCGU) was measured in 75 cortical areas and nuclei of adult, 3-4-month-old Wistar rats, using the [14C]2-deoxyglucose (2-DG) technique. Measurement of total brain radioactivity content was not significantly different in unfixed material compared to fixed brain tissue. Values of LCGU derived from fresh, unfixed material were compared with values obtained from rats fixed by perfusion 45 min after the [14C]2-DG bolus injection with phosphate-buffered 3.

[Development and cell differentiation in the nucleus nervi hypoglossi in cows].

Based upon light- and electron-microscope examinations, the ontogenetic development of the nucleus of cranial nerve XII is documented. At 1-cm crown-rump length (CRL), the caudal pole of the nucleus nervi hypoglossi forms a uniform cell column with the cornu ventrale of the spinal cord. During this period, its caudal area shows signs of cellular degeneration.

[Development and cell differentiation of the vestibulocochlear nuclei in cattle].

Based upon light- and electron microscopic examinations (50 embryos ranging from 1 to 53 cm crown-rump-length, CRL) the origin of the nuclei of the cranial nerve VIII is described with special regard to neurogenesis. The ventricular matrix lateral to the sulcus limitans represents the alar plate with its sensory areas. Up to 2.

Area specific functional activity in organotypic hippocampal slice cultures. A 2-deoxyglucose study.

Slices of hippocampus from 5 day old rats were cultured by the roller-tube technique. After 4 weeks [14C]-2-deoxyglucose (2-DG) was added to the medium for 45 min, whereafter the cultures were frozen and cut on a cryostat. The sections were thawed onto coverslips and processed for autoradiography.

[Development and cell differentiation of the motor nucleus of the facial nerve of cattle].

The early development, cell-migration and cell-differentiation of the nucleus motorius nervi facialis were studied in 32 bovine embryos with a CRL of 1 to 53 cm by light microscopical techniques. The ventro-medial cell column, a transitory embryonic formation, can be regarded as the origin of the nucleus. From there migrating cells can be demonstrated up to a CRL of 2.

[Fine structure of the raphe nuclei of sheep and goats].

The medullary raphe system of sheep and goat can be divided in the solitary nuclei raphe magnus and pallidus besides the impaired Nucleus raphe paramedianus. The nucleus raphe magnus begins in the caudal end of the medulla oblongata running far to the pons. On the other hand you can follow the nucleus raphe pallidus and paramedianus only in distinct area near the obex.

[Early development and cell differentiation of the parasympathetic vagus-glossopharyngeal nucleus in cattle. Light and electron microscopic studies].

The early development, differentiation of the cell and cell migration of the nucleus parasympathicus nervi vagi et glossopharyngei were examined by light microscope in 32 bovine embryos with crown-rump-lengths (CRL) ranging from 1 cm to 53 cm. During this period the nucleus is being enlarged 6 to 7 times and the size of the cell increases to 35-40 microns. The ultrastructure during the differentiation of the cell is shown electron microscopically in embryos with CRL of 2.

[The fine structure of the nucleus of the hypoglossal nerve of sheep and goats].

In the small domesticated ruminants the nucleus of the hypoglossal nerve is situated in close relationship to the median line in the middle of the elongated medulla. The nucleus is divided by the obex into a rostral and a caudal portion. In the sheep, four distinct subnuclei can be recognized, whereas in the dwarf goat great variations in the arrangement of cell groups exists.

[Fine tissue studies of the nerve supply to the dental pulp in domestic sheep (O. ammon aries Linné, 1758)].

The nerve supply of the pulp was investigated in 17 sheep of various breeds and age groups belonging to both sexes, using light and electron microscopy. The following results were obtained: The dental pulp of sheep is supplied with myelinated and unmyelinated nerve fibres. The subodontoblastic plexus of Raschkow, as found in man, is absent in sheep.

[The fine structure of the nucleus of the facial nerve of sheep and goats].

The nucleus of the facial nerve in sheep and goats measures 4 to 6 mm and is divided into 4 groups (dorsal, medial, lateral, intermediate). Electronmicroscopically 5 neuronal types and 4 classes of synapses could be detected. Differences between the species are reduced to the arrangement of the rough endoplasmic reticulum and number of axo-somatic synapses.

Acute fatalities following subcutaneous injection of paramyxovirus type 1 vaccines in pigeons.

Acute mortality immediately following subcutaneous injection of vaccines against the paramyxovirus type 1 infection of pigeons is described. The accidental injury of the plexus venosus intracutaneous collaris located on both sides of the upper part of the neck of pigeons appears to be the only cause of the observed fatalities.

[Cytoarchitecture and ultrastructure of the mesencephalon trigeminal nucleus of the domestic chicken].

Position, form, dimensions and fine structure of the mesencephalic trigeminal nucleus of the domestic chicken are described. It consists of round to oval large and rare medium sized pseudo-unipolar neurons. The Nissl bodies are scattered throughout the perikaryon of both cell types in a dust like way.

[The ultrastructure of the nucleus of the solitary tract of the sheep and goat].

The sensory nucleus of the IXth and Xth cranial nerve in sheep and goat takes a position in the middle of the elongated medulla forming a bilateral symmetric cell column. Neighbouring the canalis centralis dorsolaterally the caudal segments of both nuclei are connected in the raphe region by a subnucleus commissuralis. The solitary tract defines the nucleus in its lateral extension.

[Mesenteric vascular occlusion].

This report concerns 70 cases of occlusion of the mesenteric vessels, 32 arterial and 38 venous. Clinical symptoms and possibilities of therapy are discussed. Operative therapy was carried out in only 19 patients, 5 of whom survived.