Sex-contingent face aftereffects depend on perceptual category rather than structural encoding

Many studies have used visual adaptation to investigate how recent experience with faces influences perception. While faces similar to those seen during adaptation phases are typically perceived as more 'normal' after adaptation, it is possible to induce aftereffects in one direction for one category (e.g. female) and simultaneously induce aftereffects in the opposite direction for another category (e.g. male). Such aftereffects could reflect 'category-contingent' adaptation of neurons selective for perceptual category (e.g. male or female) or 'structure-contingent' adaptation of lower-level neurons coding the physical characteristics of different face patterns. We compared these explanations by testing for simultaneous opposite after effects following adaptation to (a) two groups of faces from distinct sex categories (male and female) or (b) two groups of faces from the same sex category (female and hyper-female) where the structural differences between the female and hyper-female groups were mathematically identical to those between male and female groups. We were able to induce opposite aftereffects following adaptation between sex categories but not after adaptation within a sex category. These findings indicate the involvement of neurons coding perceptual category in sex-contingent face aftereffects and cannot be explained by neurons coding only the physical aspects of face patterns.     

Synaptic localization of GluR4-containing AMPARs and Arc during acquisition, extinction, and reacquisition of in vitro classical conditioning

Data suggest that modulation of synaptic strength by incorporation of GluR4-containing AMPARs occurs during conditioned response (CR) acquisition in an in vitro model of classical conditioning. Here we extend these findings by showing that synaptically localized GluR4 subunits parallels the expression of CRs during conditioning training in which there is differential expression of CRs, such as during acquisition, extinction, and reacquisition. Moreover, colocalization and coimmunoprecipitation data suggest that Arc associates with GluR4-containing AMPARs during these different training procedures. Once induced, Arc remains present in synapses during these phases of conditioning. The results are consistent with the interpretation that synaptic incorporation of GluR4-containing AMPARs supports the expression of CRs in this preparation, and that Arc may be involved in trafficking of GluR4 subunits during conditioning. Moreover, the maintained presence of synaptically localized Arc during all phases of conditioning examined indicates that synapses do not return to their na?ve state after extinction and that, given the potential trafficking function of Arc, may facilitate relearning after extinction.     

Personality Science and Self-Regulation: Personal Projects as Integrative Units

Cervone, Shadel, Smith, and Fiori (2006 ) make a strong case for enhancing theoretical coherence in the study of self-regulation by examining recent advances in personality science. I extend their line of argument, reframe their philosophical reminders and strategically shift their suggestions. My goal is to provide an augmented base from which personality science and self-regulation research and practice can derive mutual benefit. Consensus seems to be emerging that personality science can be usefully conceptualised as a multi-tier structure, each floor of which focuses on different units of analysis. I focus on Tier I (trait units) and Tier II (PAC units (personal action constructs)). I suggest that Tier II is the home of both the social cognitive theorists and social ecological theorists and that they seem to have colluded to ignore each other. I use Cervone et al.'s timely article as a stimulant to do some renovation work on this floor. Focusing on personal projects I suggest that they provide an integrative function for personality science that augments the contributions of their close neighbors doing CAPS and KAPA research. By some minor renovations we find ourselves able to speak to the narrative theorists in the loft above and even to the trait theorists below. The resulting conversational potential, I suggest, is salutary for both personality science and the study of self-regulation.     

How Clearly Must I See? Art and Ethics in Pedagogical Practice

This essay explores pedagogical practices and ethical obligations in the embrace of cultural and religious diversity by a faculty team in a theological school course. Attention is given to the interplay of art and ethical dilemmas in an educational praxis that calls into question students’ taken‐for‐granted worldviews and theologies. In the first of three sections the writers identify several assumptions they brought to the conduct of the course regarding diversity, art, and pedagogy. The second section describes student encounters with and responses to art from a variety of cultural contexts. The paper concludes with a critical reflection on ethical and political issues arising from pedagogical practices that engage students with art.