Spontaneous recognition of object configurations in rats: effects of fornix lesions

1994 ◽  
Vol 100 (1) ◽  
Author(s):  
Abdelkader Ennaceur ◽  
JohnPatrick Aggleton
2019 ◽  
Author(s):  
Shota Shimoda ◽  
Takaaki Ozawa ◽  
Yukio Ichitani ◽  
Kazuo Yamada

AbstractSpontaneous recognition tests, which utilize rodents’ innate tendency to explore novelty, can evaluate not only simple non-associative recognition memory but also more complex associative memory in animals. In the present study, we investigated whether the length of the object familiarization period (sample phase) improved subsequent novelty discrimination in the spontaneous object, place, and object-place-context (OPC) recognition tests in rats. In the OPC test, rats showed a significant novelty preference only when the familiarization period was 30 min but not when it was 5 min or 15 min. However, the rats exhibited a successful discrimination between the stayed and replaced objects under 15 min and 30 min familiarization period conditions in the place recognition test and between the novel and familiar objects under all conditions of 5, 15 and 30 min in the object recognition test. Our results suggest that the extension of the familiarization period improves performance in the spontaneous recognition paradigms, and a longer familiarization period is necessary for long-term associative recognition memory than for non-associative memory.


2014 ◽  
Vol 55 (4) ◽  
pp. 27-32
Author(s):  
Tülin Arslan

Ende März 2014 hat das Gallup-Institut seine Studie zum Mitarbeiter-Engagement-Index veröffentlicht, welchen sie seit dreizehn Jahren erhebt. Wieder geben 84% der Befragten über achtzehn Jahren an, dass sie sich gering bis gar nicht dem Unternehmen verbunden fühlen, bei dem sie beschäftigt sind. Auch wenn ihr Anteil von 11% im Jahre 2011 auf nun 16% gestiegen ist, ist der Anteil der Mitarbeiter und Mitarbeiterinnen mit einer hohen emotionalen Bindung zum Unternehmen noch viel zu gering. Bei 33,819 Millionen Erwerbstätigen, die über achtzehn Jahre alt sind, führt diese Situation auf Grund von Fehlzeiten, Fluktuation, Mitarbeiterschwund, Arbeitsunfällen und Qualitätsproblemen zu Mehrkosten für die deutsche Volkswirtschaft in Höhe von mindestens 98,5 Milliarden Euro. Was können Firmen und die einzelnen Führungskräfte unternehmen, um diesen Zustand zu verbessern? Kann durch Anerkennung und Wertschätzung die Bindung der Mitarbeiter und Mitarbeiterinnen und dadurch der Unternehmensgewinn gesteigert werden? The Gallup Institute published the results of its Employee Engagement Index study at the end of March, which it has been conducting for 13 years. Again, 85% of the polled participants over the age of 18 do not feel associated to the company they work for. Although the percentage has increased from 11% in 2011 to 16%, the percentage of employees with a high level of emotional attachment to their company is quite low. As Germany has 33,819 million employees over the age of 18, this lack of attachment leads to issues such as absenteeism, employee turnover, work force decline, work-related accidents and quality issues; which in turn increases the costs for the German economy by at least 98.5 billion Euros. What can companies and individual managers do to improve this situation? Can employee commitment/ retention be improved through employee appreciation and recognition and thus increase business profits? Keywords: total rewards systeme, maslowsche bedürfnispyramide, innere kündigung, gallup studie, frederick herzberg


Author(s):  
Michele Chan ◽  
Madeline J. Eacott ◽  
David J. Sanderson ◽  
Jianfei Wang ◽  
Mu Sun ◽  
...  

1992 ◽  
Vol 44 (3) ◽  
pp. 423-454 ◽  
Author(s):  
Joana Brunas-Wagstaff ◽  
Andrew W. Young ◽  
Andrew W. Ellis

Reaction times to make a familiarity decision to the faces of famous people were measured after recognition of the faces in a pre-training phase had occurred spontaneously or following prompting with a name or other cue. At test, reaction times to familiar faces that had been recognized spontaneously in the pre-training phase were significantly facilitated relative to an unprimed comparison condition. Reaction times to familiar faces recognized only after prompting in the pre-training phase were not significantly facilitated. This was demonstrated both when a name prompt was used (Experiments 1 and 3) and when subjects were cued with brief semantic information (Experiment 2). Repetition priming was not found to depend on prior spontaneous recognition per se. In Experiment 3, spontaneously recognizing a familiar face did not prime subsequent familiarity judgements when the same face had only been identified following prompting on a prior encounter. In Experiment 4, recognition memory for faces recognized after cueing was found to be over 90% accurate. This indicates that prompted recognition does not yield repetition priming, even though subjects can remember the faces. A fusion of “face recognition unit” and “episodic record” accounts of the repetition priming effect may be more useful than either theory alone in explaining these results.


2021 ◽  
Vol 177 ◽  
pp. 107361
Author(s):  
Arely Cruz-Sanchez ◽  
Jennifer Wilkin ◽  
Maithe Arruda-Carvalho

eNeuro ◽  
2021 ◽  
pp. ENEURO.0319-21.2021
Author(s):  
Mehreen Inayat ◽  
Arely Cruz-Sanchez ◽  
Hayley H. A. Thorpe ◽  
Jude A. Frie ◽  
Blake A Richards ◽  
...  

2010 ◽  
Vol 39 (4) ◽  
pp. 725-735 ◽  
Author(s):  
Benjamin A. Anderson ◽  
Larry L. Jacoby ◽  
Ruthann C. Thomas ◽  
David A. Balota

Perception ◽  
10.1068/p3428 ◽  
2003 ◽  
Vol 32 (8) ◽  
pp. 937-946 ◽  
Author(s):  
Marina Pavlova ◽  
Alexander Sokolov

Display inversion severely impedes veridical perception of point-light biological motion (Pavlova and Sokolov, 2000 Perception & Psychophysics62 889–899; Sumi, 1984 Perception13 283–286). Here, by using a spontaneous-recognition paradigm, we ask whether prior information about display orientation improves biological motion perception. Participants were shown a set of 180° inverted point-light stimuli depicting a human walker and quadrupeds (dogs). In experiment 1, one group of observers was not aware of the orientation of stimuli, whereas the other group was told beforehand that stimuli will be presented upside down. In experiment 2, independent groups of participants informed about stimulus orientation saw the same set of stimuli, in each of which either a moving or a static background line was inserted. The findings indicate that information about display inversion is insufficient for reliable recognition of inverted point-light biological motion. Instead, prior information facilitates display recognition only when it is complemented by additional contextual elements. It appears that visual impressions from inverted point-light stimuli remain impenetrable with respect to one's knowledge about display orientation. The origins of orientation specificity in biological motion perception are discussed in relation to the recent neuroimaging data obtained with point-light stimuli and fragmented Mooney faces.


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