Singularity and consciousness: A neuropsychological contribution

In common sense experience based on introspection, consciousness is singular. There is only one ‘me’ and that is the one that is conscious. This means that ‘singularity’ is a defining aspect of ‘consciousness’. However, the three main theories of consciousness, Integrated Information, Global Workspace and Recurrent Processing theory, are generally not very clear on this issue. These theories have traditionally relied heavily on neuropsychological observations and have interpreted various disorders, such as anosognosia, neglect and split-brain as impairments in conscious awareness without any reference to ‘the singularity’. In this review, we will re-examine the theoretical implications of these impairments in conscious awareness and propose a new way how to conceptualize consciousness of singularity. We will argue that the subjective feeling of singularity can coexist with several disunified conscious experiences. Singularity awareness may only come into existence due to environmental response constraints. That is, perceptual, language, memory, attentional and motor processes may largely proceed unintegrated in parallel, whereas a sense of unity only arises when organisms need to respond coherently constrained by the affordances of the environment. Next, we examine from this perspective psychiatric disorders and psycho-active drugs. Finally, we present a first attempt to test this hypothesis with a resting state imaging experiment in a split-brain patient. The results suggest that there is substantial coherence of activation across the two hemispheres. These data show that a complete lesioning of the corpus callosum does not, in general, alter the resting state networks of the brain. Thus, we propose that we have separate systems in the brain that generate distributed conscious. The sense of singularity, the experience of a ‘Me-ness’, emerges in the interaction between the world and response-planning systems, and this leads to coherent activation in the different functional networks across the cortex.     

Priming effects of arithmetic signs in 10- to 15-year-old children

In this research, 10- to 12- and 13- to 15-year-old children were presented with very simple addition and multiplication problems involving operands from 1 to 4. Critically, the arithmetic sign was presented before the operands in half of the trials, whereas it was presented at the same time as the operands in the other half. Our results indicate that presenting the ‘x’ sign before the operands of a multiplication problem does not speed up the solving process, irrespective of the age of children. In contrast, presenting the ‘+’ sign before the operands of an addition problem facilitates the solving process, but only in 13 to 15-year-old children. Such priming effects of the arithmetic sign have been previously interpreted as the result of a pre-activation of an automated counting procedure, which can be applied as soon as the operands are presented. Therefore, our results echo previous conclusions of the literature that simple additions but not multiplications can be solved by fast counting procedures. More importantly, we show here that these procedures are possibly convoked automatically by children after the age of 13 years. At a more theoretical level, our results do not support the theory that simple additions are solved through retrieval of the answers from long-term memory by experts. Rather, the development of expertise for mental addition would consist in an acceleration of procedures until automatization.     

The Meaning of Parental Control in Migrant,Sending, and Host Communities: Adaptation or Persistence?

The goal of the present study was to investigate whether migrant adolescents tend to adopt the host culture's view of parental control or whether they are inclined to reaffirm their heritage culture with regard to the meaning assigned to parental control. The hypotheses regarding the level and meaning of parental control were tested on 296 Turkish‐Belgian adolescents, 306 Turks in Turkey, and 304 Belgians in Belgium with median ages of 16, 17, and 16, respectively. Although migrants reported the highest level of parental control, their ratings of parental warmth, satisfaction with the relationships with their parents, and self‐esteem did not correlate with parental control as was the case among Belgians. The findings suggest that traditional parenting is accentuated in migrant families, and that there is continuity in the traditional meaning of parental control in migration. Findings are discussed with reference to contextual factors that may reinforce culture maintenance in migration. Le but de cette recherche était d’étudier le sens que des adolescents immigrés assignaient au contrôle parental: adoptent‐ils la culture d’accueil ou ont‐ils plutôt tendance à réaffirmer leur héritage culturel? Des hypothèses tenant compte du niveau et de la signification du contrôle parental ont été testées auprès de 296 adolescents Turcs‐Belges, 306 Turcs de Turquie et 304 Belges de Belgique dont les âges médians étaient respectivement de 16, 17 et 16 ans. Bien que les immigrés présentent un plus haut niveau de contrôle parental, leurs résultats concernant la chaleur parentale, la satisfaction de leurs relations avec leurs parents, et l’estime de soi n’étaient pas corrélés avec le contrôle parental contrairement aux adolescents Belges. Ces résultats montrent que l’éducation traditionnelle est accentuée dans les familles immigrées, et que la signification traditionnelle accordée au contrôle parental persiste dans l’immigration. Ces résultats sont discutés en référence à des facteurs contextuels pouvant renforcer le maintien de la culture d’origine dans l’immigration.