Adjoint interpretations of sentential calculi

The aim of this paper is to give a general background and a uniform treatment of several notions of mutual interpretability. Sentential calculi are treated as preorders and logical invariants of adjoint situations, i.e. Galois connections are investigated. The class of all sentential calculi is treated as a quasiordered class.Some methods of the axiomatization of the M-counterparts of modal systems are based on particular adjoints. Also, invariants concerning adjoints for calculi with implication are pointed out. Finally, the notion of interpretability is generalized so that it may be applied to closure spaces as well.     

Computational enactivism under the free energy principle

In this paper, I argue that enactivism and computationalism—two seemingly incompatible research traditions in modern cognitive science—can be fruitfully reconciled under the framework of the free energy principle (FEP). FEP holds that cognitive systems encode generative models of their niches and cognition can be understood in terms of minimizing the free energy of these models. There are two philosophical interpretations of this picture. A computationalist will argue that as FEP claims that Bayesian inference underpins both perception and action, it entails a concept of cognition as a computational process. An enactivist, on the other hand, will point out that FEP explains cognitive systems as constantly self-organizing to non-equilibrium steady-state. My claim is that these two interpretations are both true at the same time and that they enlighten each other.

     

Complex effects of NMDA receptor antagonist APV in the basolateral amygdala on acquisition of two-way avoidance reaction and long-term fear memory

Although much has been learned about the role of the amygdala in Pavlovian fear conditioning, relatively little is known about an involvement of this structure in more complex aversive learning, such as acquisition of an active avoidance reaction. In the present study, rats with a pretraining injection of the N-methyl-D-aspartate (NMDA) receptor antagonist, 2-amino-5-phosphonopentanoic acid (APV), into the basolateral amygdala (BLA) were found to be impaired in two-way active avoidance learning. During multitrial training in a shuttle box, the APV-injected rats were not different from the controls in sensitivity to shock or in acquisition of freezing to contextual cues. However, APV injection led to impaired retention of contextual fear when tested 48 h later, along with an attenuation of c-Fos expression in the amygdala. These results are consistent with the role of NMDA receptors of the BLA in long-term memory of fear, previously documented in Pavlovian conditioning paradigms. The APV-induced impairment in the active avoidance learning coincided with deficits in directionality of the escape reaction and in attention to conditioned stimuli. These data indicate that normal functioning of NMDA receptors in the basolateral amygdala is required during acquisition of adaptive instrumental responses in a shuttle box but is not necessary for acquisition of short-term contextual fear in this situation.     

Semiotics of Identity: Politics and Education

In this text I concentrate on semiotic aspects of the theory of political identity in the work of Ernesto Laclau, and especially on the connection between metaphors, metonymies, catachreses and synecdoches. Those tropes are of ontological status, and therefore they are of key importance in understanding the discursive “production” of identity in political and educational practices. I use the conceptions of both Laclau and Eco to elucidate the operation of this structure, and illustrate it with an example of the emergence of the “Solidarność” movement in Poland, expanding its analysis provided by Laclau. I focus on the moment when one of particular demands assumes the representation of totality, which, in Laclau, is left to “circumstantial” determination. This moment inspires several questions and needs to be given special attention if Laclau’s theory is to be used in theory of education. It is so because theory of education cannot remain on the level of the ontological (which is the core of Laclau’s achievement), but has to theorize “non-ontological” dimensions as well, that is the ontic (i.e. “content” of education), the deontic (duty, obligation, and the normative in general), as well as what I call the deontological—the very relation between “what there is” and “what there is not” (including that which should be) as the locus of education.     

The relation of master and disciple against the background of Józef M. Bocheński’s logic of authority

Studies in East European Thought - The aim of this article is to apply Józef M. Bocheński’s logic of authority to a key interpersonal relation of philosophical interest: the...     

Is Easy Access Related to Better Life? Walkability and Overlapping of Personal and Communal Identity as Predictors of Quality of Life

Two studies (N?=?190 and N?=?447) were conducted to investigate the link between living in walkable neighborhoods and satisfaction with life in a city. Additionally, we explore possible mediators of this relationship. In both studies walkability was a significant predictor of perceived quality of life in a city, and overlap between personal and communal identity (in Study 1 and Study 2) and city identification (Study 2) were mediators of the walkability—quality of life relation. Implications for research on environmental qualities of neighborhoods and on self-concept and communal identity are discussed.     

A Semantic Approach to Conservativity

The aim of this paper is to describe from a semantic perspective the problem of conservativity of classical first-order theories over their intuitionistic counterparts. In particular, we describe a class of formulae for which such conservativity results can be proven in case of any intuitionistic theory T which is complete with respect to a class of T-normal Kripke models. We also prove conservativity results for intuitionistic theories which are closed under the Friedman translation and complete with respect to a class of conversely well-founded Kripke models. The results can be applied to a wide class of intuitionistic theories and can be viewed as generalization of the results obtained by syntactic methods.     

The SameP-Relation as a Response to Critics of Baker's Theory of Constitution

According to the so-called “standard account” regarding the problem of material constitution, a statue and a lump of clay that makes it up are not identical. The usual objection is that this view yields many objects in the same place at the same time. Lynne Rudder Baker's theory of constitution is a recent and sophisticated version of the standard account. She argues that the aforementioned objection can be answered by defining a relation of being the same P as (sameP). In this paper I shall examine consequences of her response and show that sameP has wrong formal properties, as a result of which this solution cannot be accepted.     

The effect of motivation on working memory: an fMRI and SEM study

This study investigated the effective connectivity between prefrontal regions of human brain supporting motivational influence on working memory. Functional magnetic resonance imaging (fMRI) and structural equation modeling (SEM) were used to examine the interaction between the lateral orbitofrontal (OFC), medial OFC, and dorsolateral prefrontal (DLPFC) regions in the left and right hemisphere during performance of the verbal 2-back working memory task under two reinforcement conditions. The "low-motivation" condition was not associated with monetary reinforcement, while the "high-motivation" condition involved the probability of winning a certain amount of money. In the "low-motivation" condition, the OFC regions in both hemispheres positively influenced the left DLPFC activity. In the "high-motivation" condition, the connectivity in the network including the right OFC regions and left DLPFC changed from positive to negative, whereas the positive connectivity in the network composed of the left OFC and left DLPFC became slightly enhanced compared with the "low-motivation" condition. However, only the connection between the right lateral OFC and left DLPFC showed a significant condition-dependent change in the strength of influence conveyed through the pathway. This change appears to be the functional correlate of motivational influence on verbal working memory.