The Silencing of Latino Student "Voice": Puerto Rican and Mexican Narratives in Eighth Grade and High School

Narratives of 27 Puerto Rican and Mexican students, written first in eighth grade then again as juniors in high school, address the important question of "Who am I?" and illustrate school-sponsored silencing, with students' critiques of their educational experience ignored by both the elementary and the high school. The narratives also provide a window into the high dropout rates of Latino children, the reasons behind students' academic decisions, and interventions needed to change negative schooling processes and outcomes. By giving witness to these voices, we as readers help ensure that through their writing, these Latino adolescents do not just speak but that they are heard.     

Complexity Measures in Magnetoencephalography: Measuring "Disorder" in Schizophrenia

This paper details a methodology which, when applied to magnetoencephalography (MEG) data, is capable of measuring the spatio-temporal dynamics of ‘disorder’ in the human brain. Our method, which is based upon signal entropy, shows that spatially separate brain regions (or networks) generate temporally independent entropy time-courses. These time-courses are modulated by cognitive tasks, with an increase in local neural processing characterised by localised and transient increases in entropy in the neural signal. We explore the relationship between entropy and the more established time-frequency decomposition methods, which elucidate the temporal evolution of neural oscillations. We observe a direct but complex relationship between entropy and oscillatory amplitude, which suggests that these metrics are complementary. Finally, we provide a demonstration of the clinical utility of our method, using it to shed light on aberrant neurophysiological processing in schizophrenia. We demonstrate significantly increased task induced entropy change in patients (compared to controls) in multiple brain regions, including a cingulo-insula network, bilateral insula cortices and a right fronto-parietal network. These findings demonstrate potential clinical utility for our method and support a recent hypothesis that schizophrenia can be characterised by abnormalities in the salience network (a well characterised distributed network comprising bilateral insula and cingulate cortices).     

Two Sisters and Their Mother: The Anthropology of Incest

Two Sisters and Their Mother: The Anthropology of Incest. Françoise Héritier. Jeanine Herman. trans. New York: Zone Books, 1999. 341pp.     

The Power of Words: Healing Narratives among Lubavitcher Hasidim

The debate concerning the relation between magic and religion has a long history. Instead of separating religion and magic as separate domains, recent work on ritual examines how symbolic and pragmatic acts interrelate. After discussing current theories of religious healing and, specifically, the power of words in healing, this article examines how a group of Lubavitcher Hasidic Jews deals with sickness and the relation between the group's use ofbiomedicine and religious healing. According to the group's mystical text, Tanya, there is an intrinsic link between the physical and the spiritual and between religious words and the body. At times of sickness Lubavitchers communicate with the Rebbe, who instructs them to examine their religious texts. The manipulation of religious words mediated by the Rebbe results in bodily healing. The data confirm the Malinowskian hypothesis that symbolic measures come into play when pragmatic actions fail. Can Lubavitchers be characterized as holding a well-defined model of the healing process? [Lubavitch, Tanya, text, healing]     

Impaired Representation of Time in Schizophrenia Is Linked to Positive Symptoms and Cognitive Demand

Time processing critically relies on the mesencephalic dopamine system and striato-prefrontal projections and has thus been suggested to play a key role in schizophrenia. Previous studies have provided evidence for an acceleration of the internal clock in schizophrenia that may be linked to dopaminergic pathology. The present study aimed to assess the relationship between altered time processing in schizophrenia and symptom manifestation in 22 patients and 22 controls. Subjects were required to estimate the time needed for a visual stimulus to complete a horizontal movement towards a target position on trials of varying cognitive demand. It was hypothesized that patients – compared to controls – would be less accurate at estimating the movement time, and that this effect would be modulated by symptom manifestation and task difficulty. In line with the notion of an accelerated internal clock due to dopaminergic dysregulation, particularly patients with severe positive symptoms were expected to underestimate movement time. However, if altered time perception in schizophrenia was better explained in terms of cognitive deficits, patients with severe negative symptoms should be specifically impaired, while generally, task performance should correlate with measures of processing speed and cognitive flexibility. Patients underestimated movement time on more demanding trials, although there was no link to disease-related cognitive dysfunction. Task performance was modulated by symptom manifestation. Impaired estimation of movement time was significantly correlated with PANSS positive symptom scores, with higher positive symptom scores associated with stronger underestimation of movement time. The present data thus support the notion of a deficit in anticipatory and predictive mechanisms in schizophrenia that is modulated both by symptom manifestation and by cognitive demand.