Search results for "habitu"
showing 10 items of 179 documents
Does habituation depend on cortical inhibition? Results of a rTMS study in healthy subjects
2010
Habituation, i.e. the decremental response to repeated sensorial stimulation, is studied in humans through evoked potential stimulation. Mechanisms underlying habituation are not yet cleared, even if inhibitory circuits are supposed to play an important role. Light deprivation (LD) increases visual cortical excitability likely through down-regulation of GABA circuits. We previously found that high-frequency repetitive transcranial magnetic stimulation (hf-rTMS) can revert these facilitatory effects likely restoring the activity of inhibitory circuits. Here, we studied the effects of LD and rTMS on habituation of visual evoked potentials (VEPs). The hypothesis was that if the inhibitory circ…
Habituation and Sensitization Processes in Depressive Disorders
1999
The aim of the present study was to investigate further into habituation and sensitization processes in depressive disorders. The depressive subjects were 27 outpatients. All of them were diagnosed according to DSM-III-R criteria. Controls were 27 normal subjects. The amplitudes of electrodermal responses and the basal levels were recorded during a stimuli series of 15 80-dB tones and of 1 100-dB tone in the 11th trial. The depressive patients displayed lower basal conductance levels and lower conductance amplitudes in orienting responses to the first stimulus and to stimulus change. No differences were found in conductance response amplitudes of stimuli series, although a tendency towards …
Speech perception performance as a function of stimulus pulse rate and processing strategy preference for the Cochlear™ Nucleus®CI24RE device: Relati…
2010
Current cochlear implants can operate at high pulse rates. The effect of increasing pulse rate on speech performance is not yet clear. Habituation to low rates may affect the outcome. This paper presents the results of three subsequent studies using different experimental paradigms, applying the Nucleus CI24RE device, and conducted by ten European implant teams. Pulse rate per channel varied from 500 to 3500 pulses per second with ACE and from 1200 to 3500 pps with CIS strategy. The results showed that the first rate presented had little effect on the finally preferred rate. Lower rates were preferred. The effect of pulse rate on word scores of post-linguistic implantees was small; high rat…
The role of thrombophilia and thyroid autoimmunity in unexplained infertility, implantation failure and recurrent spontaneous abortion.
2007
The role of thrombophilia and thyroid autoimmunity in unexplained infertility (UI), implantation failure (IF) and recurrent spontaneous abortion (RSA) is controversial and poorly understood.From March, 2004 to January, 2007, 119 women were prospectively included: 32 oocyte donors, 31 patients with UI, 26 with IF and 30 with RSA. The IF and RSA groups presented normal preimplantation genetic screening. Protein C, protein S, antithrombin III, lupus anticoagulant, activated protein C resistance (APCR), immunoglobulin M and G anticardiolipin antibodies, homocystine, Factor V Leiden, prothrombin G20210A mutation, methylentetrahydrofolate reductase C677T mutation, thyroid-stimulating hormone (TSH…
Randomized study of subcutaneous low molecular weight heparin plus aspirin versus intravenous immunoglobulin in the treatment of recurrent fetal loss…
2003
Objective To compare the 2 most efficacious therapeutic regimens, intravenous immunoglobulin (IVIG) and anticoagulation with low molecular weight (LMW) heparin plus low-dose aspirin, in women with recurrent pregnancy loss associated with antiphospholipid antibodies (aPL). Methods We examined 40 women with recurrent abortion (at least 3 occurrences) and repeatedly positive test results for anticardiolipin or lupus anticoagulant. The subjects were randomly assigned to treatment with IVIG or LMW heparin plus low-dose aspirin. Both therapies were started when the women were pregnant as documented by a positive urine test. IVIG was stopped at the thirty-first week of gestation, aspirin at the th…
Antiphospholipid syndrome in obstetrics.
2003
Antiphospholipid syndrome (APLS) in pregnancy is characterized by the presence of autoantibodies in association with recurrent fetal loss and severe complications such as preeclampsia, fetal growth retardation, or placental insufficiency. The most clinically important serologic markers are lupus anticoagulant, anticardiolipin antibodies, and recently anti-beta-2-glycoprotein 1 antibodies. At present, standardization does not exist and a definitive association between specific clinical manifestation and antibody level is not yet known. Experimental data gave evidence that passive transfer of antiphospholipid antibodies result in clinical manifestation of APLS, that is, fetal loss and thromb…
Electrodermal and phasic heart rate responses in the Guilty Actions Test: comparing guilty examinees to informed and uninformed innocents.
2007
The present mock-crime study concentrated on the validity of the Guilty Actions Test (GAT) and the role of the orienting response (OR) for differential autonomic responding. N=105 female subjects were assigned to one of three groups: a guilty group, members of which committed a mock-theft; an innocent-aware group, members of which witnessed the theft; and an innocent-unaware group. A GAT consisting of ten question sets was administered while measuring electrodermal and heart rate (HR) responses. For informed participants (guilty and innocent-aware), relevant items were accompanied by larger skin conductance responses and heart rate decelerations whereas irrelevant items elicited HR accelera…
Kurš šodien mazgās traukus? Mājsaimniecības darbu sadalīšana dzimumu līdztiesīgās attiecībās
2021
Balstoties Pjēra Burdjē idejās par maskulīno dominanci un praksi, pētījumā tiek apskatīts, kā uzskati par dzimumu līdztiesību atšķiras no prakses heteroseksuālos pāros, un, kā dzimumu līdztiesība pastiprina maskulīno dominanci. Astoņās daļēji strukturētās intervijās un divās video-dienasgrāmatās es pētu izpratni par dzimumu līdztiesību, tās definīciju un mājsaimniecības darbu sadalījumu, meklējot nesakritības izpratnē un praksē. Maskulīnā dominance nostiprinās formālās dzimumu līdztiesības dēļ, jo tā ir mazāk saistīta ar dzimumu līdztiesību praksē. Visbiežākais trūkstošais posms starp izpratni un praksi ir habitus un neapzināta dzimumu lomu atveidošana.
Vai informācijas patēriņa modeļi ir pielietojami etnogrāfiskā pētījumā? Mainīgs habitus jauno mediju ērā
2016
Ņemot vērā, ka informācijas lietošanas process kļūst arvien aktuālāgs akadēmiskā un politiskā kotenstā, es piedāvāju analizēt šo jautājumu kontekstuāli, balstoties uz Burdjē (Bourdieu) habitus konceptu. Lietojot auto-etnogrāfiju, līdzdalīgo novērojumu, daļēji strukturētās intervijas un eksperimentālu vizuālo metodi, es parādu, ka habitus un tehnoloģijas ir labs sākumpunkts šāda veida pētījumiem, atklājot veidus, kā indivīdi izprot informācijas konceptu, konstruē mediju telpu ap sevi; spēj lietot informāciju stratēģiski, bet tajā pašā laikā rīkojas arī pus-automātiski un neapzināti. Taču kopējās sociālās ekspektācijas un nomācoši lielas informācijas apjoms noved indivīdus pie speciālām izvai…
European Mediterranean Women and the “Showdown” Between Public Emancipation and Private Self-oppression
2020
This chapter emphasizes the unfinished nature of a form of late-modernity still hanging in the balance between frameworks of representation and legitimization regarding women and the roles they play within the public sphere in virtue of the emancipation that has taken place and the contradictions which emerge when trying to reconcile old and new models of femininity. We shall, therefore, try to disengage some of the knots linking gender violence and “cultural representations” but, above all, the “adaptive preferences” and “corrosive disadvantages” found in European women’s private lives, which clash totally with their social achievements and are attributable to emotional oppression and, sim…