scholarly journals Response priming evidence for feedforward processing of snake contours but not of ladder contours and textures

2016 ◽  
Vol 126 ◽  
pp. 174-182 ◽  
Author(s):  
Filipp Schmidt ◽  
Kathleen Vancleef
2014 ◽  
Vol 45 (3) ◽  
pp. 187-193 ◽  
Author(s):  
Florian Müller ◽  
Klaus Rothermund

According to social cognition textbooks, stereotypes are activated automatically if appropriate categorical cues are processed. Although many studies have tested effects of activated stereotypes on behavior, few have tested the process of stereotype activation. Blair and Banaji (1996) demonstrated that subjects were faster to categorize first names as male or female if those were preceded by gender congruent attribute primes. The same, albeit smaller, effects emerged in a semantic priming design ruling out response priming by Banaji and Hardin (1996) . We sought to replicate these important effects. Mirroring Blair and Banaji (1996) we found strong priming effects as long as response priming was possible. However, unlike Banaji and Hardin (1996) , we did not find any evidence for automatic stereotype activation, when response priming was ruled out. Our findings suggest that automatic stereotype activation is not a reliable and global phenomenon but is restricted to more specific conditions.


2013 ◽  
Vol 150 (2-3) ◽  
pp. 590-591 ◽  
Author(s):  
Markus Kiefer ◽  
Anna Morschett ◽  
Carlos Schönfeldt-Lecuona ◽  
Manfred Spitzer ◽  
Thomas Kammer
Keyword(s):  

Symmetry ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 577
Author(s):  
Svantje T. Kähler ◽  
Thomas Jacobsen ◽  
Stina Klein ◽  
Mike Wendt

Visual attention can be adjusted to task requirements. We asked participants to switch between judging the symmetry of vertically presented three-letter strings and identifying the central stimulus (i.e., Eriksen task) to investigate anticipatory adjustment of attention. Our experiments provide evidence for anticipatory adjustment of visual attention, depending on the cued task (i.e., focusing and defocusing of attention after the Eriksen task cue and after the symmetry task cue, respectively). Although, symmetry judgments were, overall, considerably slower than the identification of the central letter, the effects of response congruency between tasks were comparable in the two tasks, which suggested strong response priming from concurrent symmetry judgment in Eriksen task trials. Symmetry judgment performance was best for homogeneous letter strings (e.g., HHH), worst for strings that were symmetrical and inhomogeneous (e.g., XHX), and intermediate for asymmetrical strings (e.g., HHX). The difficulty of categorizing symmetrical-inhomogeneous items markedly deviated from the aesthetic ratings of the stimuli, displaying a pronounced preference for symmetrical strings, but only little difference among the symmetrical items, and might be accounted by conflict with response priming based on inhomogeneity detection. Although our study provides little evidence for an effect of aesthetic appreciation in simple symmetry judgments, it demonstrates the strong role of contextual dependencies.


2003 ◽  
Vol 285 (1) ◽  
pp. E73-E81 ◽  
Author(s):  
Kirstine Juhl ◽  
Marianne Høy ◽  
Hervør L. Olsen ◽  
Krister Bokvist ◽  
Alexander M. Efanov ◽  
...  

Using capacitance measurements, we investigated the effects of intracellularly applied recombinant human cytosolic phospholipase A2 (cPLA2α) and its lipolytic products arachidonic acid and lysophosphatidylcholine on Ca2+-dependent exocytosis in single mouse pancreatic β-cells. cPLA2α dose dependently (EC50 = 86 nM) stimulated depolarization-evoked exocytosis by 450% without affecting the whole cell Ca2+ current or cytoplasmic Ca2+ levels. The stimulatory effect involved priming of secretory granules as reflected by an increase in the size of the readily releasable pool of granules from 70–80 to 280–300. cPLA2α-stimulated exocytosis was antagonized by the specific cPLA2 inhibitor AACOCF3. Ca2+-evoked exocytosis was reduced by 40% in cells treated with AACOCF3 or an antisense oligonucleotide against cPLA2α. The action of cPLA2α was mimicked by a combination of arachidonic acid and lysophosphatidylcholine (470% stimulation) in which each compound alone doubled the exocytotic response. Priming of insulin-containing secretory granules has been reported to involve Cl- uptake through ClC-3 Cl- channels. Accordingly, the stimulatory action of cPLA2α was inhibited by the Cl- channel inhibitor DIDS and in cells pretreated with ClC-3 Cl- channel antisense oligonucleotides. We propose that cPLA2α has an important role in controlling the rate of exocytosis in β-cells. This effect of cPLA2α reflects an enhanced transgranular Cl- flux, leading to an increase in the number of granules available for release, and requires the combined actions of arachidonic acid and lysophosphatidylcholine.


2003 ◽  
Vol 16 (6) ◽  
pp. 1081-1082
Author(s):  
A.C. Nirkko ◽  
M. Berkhoff ◽  
A. Humm ◽  
K.M. Roesler ◽  
G. Schroth ◽  
...  

2018 ◽  
Vol 25 (6) ◽  
pp. 2069-2082 ◽  
Author(s):  
Poppy Watson ◽  
Reinout W. Wiers ◽  
Bernhard Hommel ◽  
Sanne de Wit

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