Asymmetrical Body Perception: A Possible Role for Neural Body Representations

ABSTRACT— Perception of one's body is related not only to the physical appearance of the body, but also to the neural representation of the body. The brain contains many body maps that systematically differ between right- and left-handed people. In general, the cortical representations of the right arm and right hand tend to be of greater area in the left hemisphere than in the right hemisphere for right-handed people, whereas these cortical representations tend to be symmetrical across hemispheres for left-handers. We took advantage of these naturally occurring differences and examined perceived arm length in right- and left-handed people. When looking at each arm and hand individually, right-handed participants perceived their right arms and right hands to be longer than their left arms and left hands, whereas left-handed participants perceived both arms accurately. These experiments reveal a possible relationship between implicit body maps in the brain and conscious perception of the body.     

The Public Dimension Of Scientific Controversies

Acceptance of three tenets of the doctrine of scientific objectivity, namely, the tenets of consensus, compartmentalization, and ahistorical truth, undermines scientists appreciation of the importance of scientific controversy and consideration of the policy and value implications of controversial scientific theories. This essay rejects these tenets and suggests scientists appreciate theoretical diversity, learn rational means for adjudicating value differences, and cultivate conversational as well as written forms of communication.     

In Praise of Objective-Subjectivity: Teaching the Pursuit of Precision

Building upon aspects of Isreal Scheffler's philosophy, this essay takes up the search for forms of education that will lead to increased participation in a universal conversation in the making. In particular, it looks at how the rational passions may either enhance or impede the possibility of intelligible discourse between opponents. On the impediment side, the phenomenon of 'communicative isolation' is investigated, along with the nature of arrogant perception and the problematic role played by negative rational passions. The conclusion reached is one that advocates the cultivation of 'objective-subjectivity' – a practice that combines reflexivity and precise self-awareness with the conscious exercise of positive rational passions.     

Follow your heart: Emotion adaptively influences perception

The current review introduces a new program of research that suggests the perception of spatial layout is influenced by emotions. Though perceptual systems are often described as closed and insulated, this review presents research suggesting that a variety of induced emotions (e.g., fear, disgust, sadness) can produce changes in vision and audition. Thus, the perceptual system may be highly interconnected, allowing emotional information to influence perceptions that, in turn, influence cognition. The body of work presented here also suggests that emotion-based changes in perception help us solve particular adaptive problems because emotion does not change all perceptions of the world. Taking the adaptive significance of emotion into account allows us to make predictions about when and how emotion influences perception.