Guided saccades modulate face- and body-sensitive activation in the occipitotemporal cortex during social perception

Functional magnetic resonance imaging (fMRI) has identified distinct brain regions in ventral occipitotemporal cortex (VOTC) and lateral occipitotemporal cortex (LOTC) that are differentially activated by pictures of faces and bodies. Recent work from our laboratory has shown that the strong LOTC activation evoked by bodies in which the face is occluded is attenuated when the occlusion is removed. We hypothesized that this attenuation may occur because subjects preferentially fixate upon faces when present in the scene. Here, we experimentally manipulated subjects’ fixations while they viewed a static picture of a character whose face, hand, and torso were continuously visible throughout each run. The subject’s saccades and fixations were guided by a small fixation cross that made discrete jumps to a new location every 500 ms. Subjects were instructed to follow the fixation cross and make a button press whenever it changed size. In a series of blocks, the fixation cross shifted from locations on the face, on the hand, and to locations on a background image of a phase-scrambled face. In a second study, the fixation cross moved similarly, but the hand locations were changed to locations along the character’s body or torso. A localizer task was used to identify face- and body-sensitive regions of LOTC. Body-sensitive regions were strongly activated when the subjects’ saccades were guided over the character’s torso relative to when the saccades were guided over the character’s face. Little to no activity occurred in the body-sensitive region of LOTC when the subjects’ saccades were guided over the character’s hand. The localizer task was unable to differentiate body-sensitive regions in lateral VOTC from face-sensitive regions, or body-sensitive regions in medial VOTC from flower-sensitive regions. Guided saccades over the body strongly activated both lateral and medial VOTC. These results provide new insights into the function of body-sensitive visual areas in both LOTC and VOTC, and illustrate the potential confounding influence of uncontrolled eye movements for neuroimaging studies of social perception.     

But is it Unique to Nanotechnology?

Attempts have been made to establish nanoethics as a new sub-discipline of applied ethics. The nature of this sub-discipline is discussed and some issues that should be subsumed under nanoethics are proposed. A distinction is made between those issue that may ensue once nanotechnology applications become available and procedural issues that should be integrated into the decision structure of the development. A second distinction relates to the central value of the ethical issue. The conditions for the ethical debate differ depending on whether the value(s) in question is internal to the technological development (i.e. health and safety) or external to it (i.e. privacy, equity etc).     

Gendered Ways to Motivation Gains in Groups

Recent studies have demonstrated motivation gains of low performing group members even beyond the level of an individual work baseline (e.g., Weber and Hertel, Journal of Personality and Social Psychology, 93:973–993, 2007). We expected that the underlying mechanisms of these motivation gains, i.e., social indispensability and social competition, are moderated by individuals’ gender. Moreover, these gender effects were assumed to be moderated by partner anonymity. Predictions were tested with mostly undergraduate German students (N?=?213) working in same-gender groups in a computer-supported environment. Results revealed that motivation gains due to social indispensability were more likely for women, whereas motivation gains due to social competition were more likely for men. Furthermore, women compared to men showed higher motivation gains in anonymous conditions compared to conditions with an acquainted partner.     

The BlackBerry project: capturing the content of adolescents' text messaging

This article presents an innovative method for capturing the content of adolescents' electronic communication on handheld devices: text messaging, e-mail, and instant messaging. In an ongoing longitudinal study, adolescents were provided with BlackBerry devices with service plans paid for by the investigators, and use of text messaging was examined when participants were 15 years old and in the 10th grade (N = 175; 81 girls). BlackBerries were configured so that the content of all text messages, e-mail messages, and instant messages was saved to a secure server and organized in a highly secure, searchable, online archive. This article describes the technology used to devise this method and ethical considerations. Evidence for validity is presented, including both information on use of text messaging to show that participants used these devices heavily and frequencies of profane and sexual language in a 2-day sample of text messaging to demonstrate that they were communicating openly.     

Condition-dependent adaptive phenotypic plasticity and interspecific gene-culture coevolution

Evolutionary socioecological theory and research proposing linking parasites with human social organization is uncommon and therefore welcome. However, more generally, condition-dependent adaptive phenotypic plasticity requires environmental uncertainty on a small scale, accompanied by reliable cues. In addition, genes in parasites may select among biologically adaptive cultural alternatives directly without necessarily going through human genetic predispositions, resulting in inter-specific gene-culture coevolution.     

The reliability and validity of the Perceived Stigmatization Questionnaire (PSQ) and the Social Comfort Questionnaire (SCQ) among an adult burn survivor sample

In this study, 361 adult burn survivors completed the Perceived Stigmatization Questionnaire (PSQ), the Social Comfort Questionnaire (SCQ), and other measures. Both the PSQ and SCQ had good internal consistency indices. Factor analysis of the PSQ yielded 3 factors (absence of friendly behavior, confused/staring behavior, and hostile behavior). The SCQ had 1 factor. Conjoint factor analysis with measures of related constructs (body esteem, body-esteem importance, depression, social support) suggested that PSQ and SCQ measure distinct constructs. Correlations with the related psychosocial constructs and burn characteristics suggested the PSQ and SCQ have good convergent and discriminant validity. Limitations of the study are discussed.     

Activity Level and Sex-Stereotyped Toy Choice in Toddler Boys and Girls

In the first study, the motor activity level and vigor of play of 52 toddlers was assessed as they played with a set of sex-role stereotyped and neutral toys. Boys and girls showed the same level of activity, and both were significantly more active when playing with stereotypically masculine toys. In the second study, 27 toddlers were observed playing with toys defined as potentially eliciting high, medium, or low activity within the masculine, feminine, and neutral categories. Again, boys and girls did not differ in overall activity level. All children preferred toys that allowed moderate to high activity, but given this preference, they selected toys stereotyped for their own gender above those stereotyped for the other gender.     

Vulnerability to psychosis, I-thou intersubjectivity and the praecox-feeling

Psychotic and prodromal states are characterized by distortions of intersubjectivity, and a number of psychopathologists see in the concrete I-You frame of the clinical encounter the manifestation of such impairment. Rümke has coined the term of ‘praecox-feeling’, designated to describe a feeling of unease emanating in the interviewer that reflects the detachment of the patient and the failure of an ‘affective exchange.’ While the reliability of the praecox-feeling as a diagnostic tool has since been established, the explanation and theoretical framing of the phenomena is still lacking. By drawing on enactivist approaches to social cognition, the paper will attempt to provide such an explanation. This is relevant, since such an explanation could contribute to a more precise understanding of the phenomena in question and possibly add to our knowledge regarding the link between experiential vulnerability to psychosis and disturbed I-Thou intersubjectivity.