Ontological Proofs of Existence and Non-Existence

Caramuels’ proof of non-existence of God is compared with Gödel’s proof of existence.     

Pain, dissociation and subliminal self-representations

According to recent evidence, neurophysiological processes coupled to pain are closely related to the mechanisms of consciousness. This evidence is in accordance with findings that changes in states of consciousness during hypnosis or traumatic dissociation strongly affect conscious perception and experience of pain, and markedly influence brain functions. Past research indicates that painful experience may induce dissociated state and information about the experience may be stored or processed unconsciously. Reported findings suggest common neurophysiological mechanisms of pain and dissociation and point to a hypothesis of dissociation as a defense mechanism against psychological and physical pain that substantially influences functions of consciousness. The hypothesis is also supported by findings that information can be represented in the mind/brain without the subject's awareness. The findings of unconsciously present information suggest possible binding between conscious contents and self-functions that constitute self-representational dimensions of consciousness. The self-representation means that certain inner states of own body are interpreted as mental and somatic identity, while other bodily signals, currently not accessible to the dominant interpreter's access are dissociated and may be defined as subliminal self-representations. In conclusion, the neurophysiological aspects of consciousness and its integrative role in the therapy of painful traumatic memories are discussed.     

On Vagueness,Truth Values and Fuzzy Logics

Some aspects of vagueness as presented in Shapiro’s book Vagueness in Context [23] are analyzed from the point of fuzzy logic. Presented are some generalizations of Shapiro’s formal apparatus. Presented by Daniele Mundici     

The racial subtext in Canada’s immigration discourse

The articulation of race has become subtle and elusive in democratic societies because racism conflicts with principles of equality and non-discrimination. This article examines Canada’s immigration discourse and argues that a racial subtext can be discerned from the discourse by examining its vocabulary, syntax, structure, and implied rationale. The study shows that codified concepts and an implied logic are used to convey racial massages that appear not to be “race”-based. The discourse is further facilitated by opinion polls and academic studies that reify the notion of “race” and legitimize its everyday use as a harmless concept. It is the discourse itself, and not implied differences of “race”, that fragments Canada. The study recommends abandoning the use of racial subtext in academic research and immigration policy development.     

Visual imagery and memory: Do retrieval strategies affect what the mind's eye sees?

A variety of visual mental imagery tasks have been shown to activate regions of visual cortex that subserve the perception of visual events. Here fMRI was used to examine whether imagery‐related visuocortical activity is modulated if imagery content is held constant but there is a change in the memory retrieval strategy used to invoke imagery. Participants were scanned while visualising common objects in two different conditions: (a) recalling recently encoded pictures and (b) based on their knowledge of concrete nouns. Results showed that retrieval‐related activations in frontal cortex were bilateral when pictures were visualised but left‐lateralised when nouns were visualised. In posterior brain regions, both imagery conditions led to activation in the same set of circumscribed areas in left temporal‐parietal cortex, including a region of the left fusiform gyrus that has previously been implicated in visual imagery. These findings suggest that the posterior network activated during imagery did not vary with strategic task‐related changes in the frontal network used to retrieve imagery content from memory.     

Acuity of auditory images in pitch and time

We examined the pitch and temporal acuity of auditory expectations/images formed under attentional-cuing and imagery task conditions, in order to address whether auditory expectations and auditory images are functionally equivalent. Across three experiments, we observed that pitch acuity was comparable between the two task conditions, whereas temporal acuity deteriorated in the imagery task. A fourth experiment indicated that the observed pitch acuity could not be attributed to implicit influences of the primed context alone. Across the experiments, image acuity in both pitch and time was better in listeners with more musical training. The results support a view that auditory images are multifaceted and that their acuity along any given dimension depends partially on the context in which they are formed.     

The role of key features in predator recognition by untrained birds

The most important role in the recognition and categorization of predators (as well as other animals) is usually attributed to so-called key features. Under laboratory conditions, we tested the role of yellow eyes (specific for the genus Accipiter in European raptors) and hooked beak (common for all European birds of prey) in the recognition of the sparrowhawk (Accipiter nisus) by untrained great tits (Parus major) caught in the wild. Using wooden dummies, we interchanged either one of these potential key features or the body of the sparrowhawk (predator) and domestic pigeon (harmless bird). The tested tits showed three types of behaviour in the presence of the dummies: fear, interest without fear, and lack of interest. Eye interchange lowered fear of the sparrowhawk, but did not cause fear of the pigeon. Beak interchange did not lower fear of the sparrowhawk. Eye interchange caused increased interest in both species. Thus, a specific sparrowhawk feature is necessary for correct sparrowhawk dummy recognition but a general raptor feature is not. On the other hand, a specific sparrowhawk feature on a pigeon dummy is not enough to prompt sparrowhawk recognition. Thus, key features play an important, but not exclusive, role in predator recognition. An increased interest in some of the modified dummies implies that the tits have a general concept of a sparrowhawk. The individual variability in behaviour of tits is discussed.     

A kestrel without hooked beak and talons is not a kestrel for the red-backed shrike (Lanius collurio)

Animal Cognition - Birds are strongly motivated to recognize various predators to secure survival and reproductive success. Thus, predator recognition provides a useful tool for the investigation...     

Weak subjectivity,trans-subjectivity and the power of event

This article begins with Gedankenexperiment proposed in The Adventure of Difference by Gianni Vattimo: Following his suggestion to read Heidegger’s fundamental ontology in terms of Nietzsche’s The Birth of the Tragedy, we attempt to reinterpret the distinction of the authentic and inauthentic existence in the light of the difference between the Dionysian and Apollonian element, which brings us also to a new view on the existential finitude, individuality and co-existence with others. In the background of these existential features we discover the notion of event that breaks the ecstatic unity of temporality and marks the hermeneutical continuity of existence by the radical discontinuity. The image of existence exposed to the power of event is further elaborated with the help of Henri Maldiney who has introduced into the frame of the fundamental ontology the concepts of trans-possibility and trans-passibility that express the existential openness to the event. Such a reformulation of the fundamental ontology, however, brings us into the sphere of heteronomous thought that, instead of preserving its essential autonomy, unity and integrity, becomes other in its relation to the otherness that is encountered in the event.