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What happened when the Pleistocene megafauna became extinct?
(Pergamon-Elsevier Science Ltd, 2018-04)
This work presents an updated revision of the information about Pleistocene fauna records in archeological sites of the Pampa and Patagonian regions of South America. The purpose is to assess the role played by humans ...
Reconsolidation or Extinction: Transcription Factor Switch in the Determination of Memory Course after Retrieval
(Society for Neuroscience, 2011-04)
In fear conditioning, aversive stimuli are readily associated with contextual features. A brief reexposure to the training context causes fear memory reconsolidation, whereas a prolonged reexposure induces memory extinction. ...
Sizing and Eddy currents in magnetic core nanoparticles: An optical extinction approach
(Royal Society of Chemistry, 2016-12)
Optical extinction is a handy and ubiquitous technique that allows us to study colloidal nanoparticles in their native state. The typical analysis of the extinction spectrum can be extended in order to obtain structural ...
Local extinction of melanophryniscus montevidensis (Anura: Bufonidae) in the Argentine pampas
(Pensoft Publishers, 2017-07)
Melanophryniscus montevidensis inhabits sandy dunes along the Rio de la Plata shoreline and Atlantic coast in Uruguay and southern Brazil. Here we report 2 specimens from different localities at eastern Buenos Aires province, ...
Boiruna cf. B. maculata (Ophidia: Colubroides) from the Early to Middle Pleistocene of Argentina, and the Effects of Pleistocene Extinctions on South American Reptiles
(Brazilian Society of Herpetology, 2009-12)
A new specimen referable to Boiruna cf. B. maculata from a Lower-Mid Pleistocene locality in Ramallo, Buenos Aires, Argentina is described, representing the first fossil record of this genus. This specimen is referred to ...
Survival of Branching Random Walks in Random Environment
(Springer/plenum PublishersNew YorkEUA, 2010)
An index for defaunation
(2013-07-01)
Defaunation, originally conceived as the loss of large vertebrates due to hunting or fragmentation, has been widely used in conservation studies yet the term has been arbitrarily used and poorly defined. Here we refine ...
Reacquisition, reinstatement, and renewal of a conditioned taste aversion in preweanling rats
(Wiley, 2013-06)
Pavlovian extinction is defined as a reduction of the conditioned response (CR) as a consequence of repeated and nonreinforced presentations of the conditioned stimulus (CS). This phenomenon has been explained through two ...
RETURN OF FEAR IN RATS DUE TO CONTEXT CHANGE, DELAY OF TESTING, AND THEIR COMBINATION.
(Sociedad Mexicana de Análisis de la Conducta / Mexican Society of Behavior Analysis, 2015)
Preventing the recovery of extinguished ethanol tolerance
(ELSEVIER SCIENCE BV., 2016)
There is substantial evidence that drug-paired cues become associated with drug effects. From a Pavlovian perspective, these cues act as conditioned stimuli and elicit conditioned compensatory responses that contribute to ...