Normal perception of Mooney faces in developmental prosopagnosia: Evidence from the N170 component and rapid neural adaptation

Individuals with developmental prosopagnosia (DP) have a severe difficulty recognizing the faces of known individuals in the absence of any history of neurological damage. These recognition problems may be linked to selective deficits in the holistic/configural processing of faces. We used two‐tone Mooney images to study the processing of faces versus non‐face objects in DP when it is based on holistic information (or the facial gestalt) in the absence of obvious local cues about facial features. A rapid adaptation procedure was employed for a group of 16 DPs. Naturalistic photographs of upright faces were preceded by upright or inverted Mooney faces or by Mooney houses. DPs showed face‐sensitive N170 components in response to Mooney faces versus houses, and N170 amplitude reductions for inverted as compared to upright Mooney faces. They also showed the typical pattern of N170 adaptation effects, with reduced N170 components when upright naturalistic test faces were preceded by upright Mooney faces, demonstrating that the perception of Mooney and naturalistic faces recruits shared neural populations. Our findings demonstrate that individuals with DP can utilize global information about face configurations for categorical discriminations between faces and non‐face objects, and suggest that face processing deficits emerge primarily at more fine‐grained higher level stages of face perception.     

Emotional cascade theory and non-suicidal self-injury: the importance of imagery and positive affect

Grounded in Emotional Cascade Theory, we explored whether rumination and multisensory imagery-based cognitions moderated the relationships between affect and both odds of non-suicidal self-injury (NSSI), and frequency of the behaviour. A sample of 393 university students completed self-report questionnaires assessing the constructs of interest. Contrary to expectations, rumination did not emerge as a significant moderator of the affect-NSSI relationship. However, the relationship between affect and frequency of NSSI was moderated by the use of imagery. Further, the relationship between negative affect and NSSI was moderated by positive affect, underscoring the need to consider both negative and positive affect in models of NSSI. Most youth who self-injured reported thinking in images while the urge to self-injure was strong, with 53% thinking in images at least half the time. Future work is needed to explore how positive and negative affect work in concert to govern NSSI, and how imagery might either exacerbate or reduce risk of NSSI.     

Dewey’s Theory of Experience,Traumatic Memory,and Music Education

Studies in Philosophy and Education - Trauma’s ubiquity in society leads to an acknowledgement that damaging experiences likely affect more students than they leave untouched. Dewey...     

God So Loved the World

The account of the near sacrifice of Isaac in Genesis 22, often referred to as the Aqedah, has been profoundly influential, both directly and indirectly, in Jewish, Christian, and Muslim theological reflection. This article seeks to explore some Christian insights into the use of the motif of the sacrifice of Isaac, suggesting that its use is fundamental to understanding the theme of Christ’s love in the Gospel of John, in particular the link between love, sacrifice, and unity. With a brief exploration of two artworks by Marc Chagall, The Sacrifice of Isaac and the White Crucifixion, it will also raise questions as to what this might mean for the relationship between Christianity and Judaism.     

The interaction of home environment features and their relation to infant competence

This investigation examined the relation between features of the home environment (HOME Scale) and domains of development (Griffiths Scales) in 6-month-olds. The sample consisted of 155 families with diverse demographic characteristics who were part of a larger study. Data were analyzed using hierarchical multiple regression. More favorable eye-hand development was associated with more availability of appropriate play materials. The interaction of appropriate play materials and maternal involvement was related to both social and hearing-speech development. For the infants who had high exposure to appropriate play materials, social and hearing-speech development was more optimal if their mothers were highly involved with them. The analyses were conducted separately for low (n = 87) and middlelhigh (n = 55) socioeconomic status groups from the sample. Partial replication of the interaction effect was present for the middle/high group, but not for the low group. Findings support the importance of examining interaction as well as additive effects of the impact of early environment for relatively large samples in which there is a diversity of experiences.     

Psychophysiological Responses of Sport Fans

The present study investigated psychophysiological differences in identified sport fans within the context of the biphasic theory of emotion (P. J. Lang, 1985). Forty participants, grouped into three levels of identification with the local university athletic teams, viewed five pictures from each of two categories (team-relevant sport and team-irrelevant sport). Self-identified sport fans rated team-relevant pictures as more pleasant and arousing compared to team-irrelevant pictures. The P3 component of the event-related potential to an irrelevant startle probe was diminished and heart-rate deceleration was enhanced during team-relevant pictures as a function of fan identification level, suggesting that these pictures evoked a motivated attentional state. Neither probe-P3 nor heart rate differed for team-irrelevant pictures. Lastly, increased positivity for slow cortical potentials was evident for team-relevant compared to team-irrelevant pictures, regardless of fan identification level. These results suggest the utility of psychophysiological measures in the study of sport fans, and for other positive emotions as well.     

Accommodation, occlusion, and disparity matching are used to guide reaching: a comparison of actual versus virtual environments.

The authors used a virtual environment to investigate visual control of reaching and monocular and binocular perception of egocentric distance, size, and shape. With binocular vision, the results suggested use of disparity matching. This was tested and confirmed in the virtual environment by eliminating other information about contact of hand and target. Elimination of occlusion of hand by target destabilized monocular but not binocular performance. Because the virtual environment entails accommodation of an image beyond reach, the authors predicted overestimation of egocentric distances in the virtual relative to actual environment. This was confirmed. The authors used -2 diopter glasses to reduce the focal distance in the virtual environment. Overestimates were reduced by half. The authors conclude that calibration of perception is required for accurate feedforward reaching and that disparity matching is optimal visual information for calibration.     

Long-term memory in pigeons: I. The role of discrimination problem difficulty assessed by reacquisition measures II. The role of stimulus modality assessed by generalization slope

Pigeons learned either an easy or a difficult line angle discrimination (Experiment 1) or wavelength discrimination (Experiment 2), and then they were given a reacquisition test of retention after delays of 1 min, 1 day, or 1 week. Both percentage of responses to the S+ in the initial 10-trial block and number of blocks to criterion showed a progressive memory loss which was greater for the difficult problem. These results extend recent findings by using a free operant rather than a discrete trial task and by varying problem difficulty by altering the dimensional separation between training stimuli. In Experiment 3, pigeons were given variable interval training with either a wavelength or a line angle stimulus, and then they were tested for generalization in extinction after delays of 1 min, 1 day, and 1 week. With both dimensions, the relative gradients became progressively flatter with increasing delay intervals. This replicates earlier findings and extends them to the line angle dimension. The evidence of substantial forgetting in the first 24 h in all three experiments suggests that operant free-response procedures are more sensitive to forgetting effects than are discrete trial tasks.     

Speech rate and the development of short-term memory span

Two experiments are reported which examine the effects of word duration on memory span in subjects of different ages. The same linear function relating recall to speech rate (assessed by the speed of repeating words) fits the results of subjects ranging in age from 4 years old to adulthood. It is concluded that developmental increases in short-term memory span can be explained in terms of increases in speech rate and that there is no evidence for an increase in short-term memory capacity. Analyses of the children's speech suggests that increases in speech rate with age reflect increases in the speed of articulation of individual words, rather than any change in the duration of pauses between successive words or changes in coarticulation between words.