Prime Filters, Normality and Irreducibility in Lattices

We recall some notions introduced and developed by António Aniceto Monteiro, and show how these notions have been used and generalised, thus establishing a direct and indirect influence of Monteiro??s work that extends to this day.     

On the syndrome of the "spare limb": one case

We describe a case of a brain-damaged patient who had a peculiar bodily illusion which could not be labelled an hallucination but seemed somatognosically and phenomenologically similar to the phantom limb without amputation. The patient, who showed left hemiplegia, felt a third upper limb (without seeing it) which he himself defined as "spare." The spare limb was not deformed; it could be moved and controlled by the patient, and there was no sensation of pain. The patient did not show psychopathological or cognitive disorders. A possible interpretation of the phenomenon is as a "phantom movement" of the paralysed limb: the mental representation of the movement of the limb was dissociated from the bodily representation of his own limb and so was still present in his consciousness despite the paralysis.     

Decoding speech prosody: do music lessons help?

Three experiments revealed that music lessons promote sensitivity to emotions conveyed by speech prosody. After hearing semantically neutral utterances spoken with emotional (i.e., happy, sad, fearful, or angry) prosody, or tone sequences that mimicked the utterances' prosody, participants identified the emotion conveyed. In Experiment 1 (n=20), musically trained adults performed better than untrained adults. In Experiment 2 (n=56), musically trained adults outperformed untrained adults at identifying sadness, fear, or neutral emotion. In Experiment 3 (n=43), 6-year-olds were tested after being randomly assigned to 1 year of keyboard, vocal, drama, or no lessons. The keyboard group performed equivalently to the drama group and better than the no-lessons group at identifying anger or fear.     

Pharmacological and physiological aspects of sexual exhaustion in male rats

The present article reviews the current findings on the interesting phenomenon of sexual satiety. Knut Larsson in 1956 reported on the development of sexual exhaustion in the male rat after repeated copulation. We have studied the process and found the following results. (1) One day after 4 hours of ad libitum copulation, two-thirds of the population showed complete inhibition of sexual behavior, while the other third displayed a single ejaculatory series from which they did not recover. (2) Several pharmacological treatments, including 8-OH-DPAT, yohimbine, naloxone and naltrexone, reverse this sexual satiety, indicating that the noradrenergic, serotonergic and opiate systems are involved in this process. Indeed, direct neurochemical determinations showed changes in various neurotransmitters during sexual exhaustion. (3) Given enough stimulation, by changing the stimulus female, sexual satiety was prevented, suggesting that there are motivational components of the sexual inhibition that characterizes sexual exhaustion. (4) The GABA antagonist bicuculline, or the electrical stimulation of the medial preoptic area, did not reverse sexual exhaustion. These data suggest, on the one hand, that sexual exhaustion and the postejaculatory interval (which is shortened by bicuculline administration) are not mediated by similar mechanisms and, on the other, that the medial preoptic area does not regulate sexual satiety. (5) The androgen receptor density in brain areas closely related to the expression of masculine sexual behavior, such as the medial preoptic nucleus, was drastically reduced in sexually exhausted animals. Such reduction was specific to certain brain areas and was not related to changes in the levels of androgens. These results suggest that changes in brain androgen receptors account for the inhibition of sexual behavior present during sexual exhaustion. (6) The recovery process of sexual satiety after 4 hours of ad libitum copulation reveals that, after 4 days, only 63% of the males are able to show sexual behavior while after 7 days all animals display copulatory activity.     

She Needs to See it to be it: The Importance of Same-Gender Athletic Role Models

Sex Roles - In four studies, we examined the importance of gender-matched athletic role models for women. Although both women and men may benefit most from exposure to high profile athletes in...     

Retirement Adjustment Quality: Optimism and Self-Efficacy as Antecedents of Resource Accumulation

The resource-based dynamic perspective posits that retirement adjustment quality is a direct result of an individual’s access to valuable resources during transition and in the post-retirement phase, while at the same time underscoring the need to explore the distal antecedents of adjustment quality. The present study aims to examine how distal antecedents—dispositional traits and motivational variables—influence older workers’ resource accumulation and, ultimately, how it affects retirement adjustment quality, under the resource-based dynamic perspective and Hobfoll’s resource theory. A three-wave study was designed with older Spanish workers (N = 455), who were still in active employment at time 1 and time 2 but who had retired within the last 4 months at time 3. Dispositional traits like optimism have predictive power as a gauge of resource accumulation in the short run, although not all of them were fully significant. Some unexpected findings are the limited impact of personal finances on retirement adjustment quality and the absolutely nugatory influence of cognitive resources on quality of life. The present study employs a widely validated measure of retirement adjustment quality, which should ensure comparability of findings with evidence obtained from other studies.     

Standing in Between: The Healing Praxis of Mayan Women Intermediaries in Post-Genocide Guatemala

ABSTRACT

This article examines how Mayan intermediaries make meaning of their roles in accompanying Mayan women survivors of gross violations of human rights as they search for truth, justice, and reparation in post-genocide Guatemala. Using a constructivist grounded theory approach, the authors analyzed in-depth interviews with six intermediaries who worked with survivors in the context of a seven year feminist participatory and action research project. The findings reveal that healing from the legacies of armed conflict as well as from historical racialized gendered oppression are at the core of Mayan intermediaries’ work with the Mayan women survivors with whom they established an intersubjective relationship, contributing to each other’s healing. The importance of economic justice for survivors’ healing and the scant and circumscribed talk about sexual violence—the grievance central to the work with most of the survivors—emerge as important findings of this study and require future exploration.     

Anuran tadpoles learn to recognize injury cues from members of the same prey guild

Recognition of predation risk from cues released from injured heterospecific could be beneficial when prey belongs to the same prey guild. Here, we performed three experiments. Experiment 1 showed that P. thaul tadpoles reduced their activity levels when exposed to conspecific injury cues, but not when exposed to amphipod injury cues. Experiment 2 tested whether P. thaul tadpoles can learn to recognize predation risk from chemical cues released from injured heterospecifics from the same prey guild (amphipod, Hyalella patagonica). A group of tadpoles were conditioned by exposing them to a specific concentration of amphipod injury cues paired with conspecific injury cues. Two days later, we evaluated changes in the activity of tadpoles when they were exposed to amphipod cues. As a control of learning, we used an unpaired group. Additionally, we used more control groups to fully investigate the learning mechanism. Our results showed that tadpoles can learn to recognize predation risk from injured amphipods and that the mechanism underlying the observed learned response could be associative. Experiment 3 replicated Experiment 2 and also showed that a low concentration of amphipod cues did not sustain that learning.