Context and tone conditioning are selectively impaired by ethanol in the preweanling rat: Effects of dose and time of administration
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Cited by (16)
Adolescent and adult rats differ in the amnesic effects of acute ethanol in two hippocampus-dependent tasks: Trace and contextual fear conditioning
2016, Behavioural Brain ResearchCitation Excerpt :Only two studies have, to our knowledge, addressed this question. McKinzie et al. [10] used preweanling (17-day-old) rats and a study by Weitemier and Ryabinin [8] employed adult mice. Both reported detrimental effects of acute ethanol on trace, but not delay, fear conditioning.
Contextual learning and context effects during infancy: 30years of controversial research revisited
2015, Physiology and BehaviorCitation Excerpt :In this section we aim to help to elucidate which experimental conditions favor or hamper the expression or detection of contextual conditioning during infancy. In an important series of studies [29,30,48,81,88–90], Spear and his co-authors used background contextual fear conditioning procedures to study possible developmental particularities in stimulus selection, with the aim of gaining a better understanding of infantile amnesia (see [5,36] for a discussion about the possible relationship between infantile amnesia and stimulus selection; [155]). In these studies, subjects were trained in basic episodes of Pavlovian conditioning, in which they were exposed to contingent or non-contingent tone-foot-shock pairings in a specific context.
Ethanol-induced tolerance and sex-dependent sensitization in preweanling rats
2015, Physiology and BehaviorCitation Excerpt :Evidence against long-term context memory during infancy comes from studies showing poor retention of contextual fear conditioning [67,69], or lack of context modulation of interference learning [84,85]. However, a considerable number of studies have reported positive evidence of long-term contextual learning and context effects during infancy [11,12,29,49,50,60,62,63]. An analysis of the procedures used in this second set of studies reveals that positive results (i.e. long-term contextual memory retention) were usually obtained when contexts were enriched by explicit odors, their salience probably being increased by adjusting the sensory content of the context to the perceptual capacities of the preweanling rat [12,63].
Spontaneous recovery from extinction in the infant rat
2014, Behavioural Brain ResearchCitation Excerpt :The behavioral pattern displayed by the US-Only group may reflect sensitization to the tone-CS after exposure to the shock [30]. This effect may be influenced by contextual fear conditioning, since we employed an AAA design, in which extinction and spontaneous recovery sessions were carried out in the same context (see the following citations for evidences of long-term contextual fear conditioning in P18 or younger rats [28,33–37]). For all these reasons we conducted an additional experiment with significant variations in the protocol, with the aim of exploring possible recovery from extinction when the extinction protocol is carried out during the preweanling period, using procedures more similar to those employed in previous studies.
New evidence of ethanol's anxiolytic properties in the infant rat
2014, AlcoholCitation Excerpt :Here, animals were tested 5 min after ethanol intubation, during the rising phase of intoxication in which positive motivational effects of the drug are observed (Arias, Mlewski, Molina, & Spear, 2009; Molina et al., 2007; Molina, Ponce, Truxell, & Spear, 2006; Pautassi et al., 2009). In contrast, McKinzie et al. (1994) evaluated pups 30 min after ethanol administration. At that time, ethanol achieves peak blood levels (Arias et al., 2009; Molina et al., 2006) which are usually accompanied by aversive ethanol post-absorptive effects (Molina et al., 2007).
Post-training ethanol disrupts trace conditioned fear in rats: Effects of timing of ethanol, dose and trace interval duration
2009, Neurobiology of Learning and Memory
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Present address: Indiana University School of Medicine, Department of Psychiatry, The Institute of Psychiatric Research, 791 Union Drive, Indianapolis, IN 46202. Fax: (317) 274-1365.