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In this paper we explore a new direction for pedagogical computer characters, which we believe will maximize students' learning gains and enjoyment. To the traditional scenario where students interact primarily with a single coach or tutor character on-screen, we introduce the addition of both a social, animate colearner, and the student's own avatar(More)
Scientific practices increasingly incorporate sensors for data capture, information visualization for data analysis, and low-cost mobile devices for field-based inquiries incorporating open web standards. While a broad range of design approaches for developing technology-enhanced learning has been used by researchers and practitioners for the last 15 years,(More)
When cats make slow scanning head movements, intersaccadic counterrotary eye movements are driven by the vestibulo-ocular reflex, but reset or forward saccades are not directly affected by vestibular afference. When the movements are rapid (approximately 200 deg./sec), large (greater than 40 degrees), and executed in single step shifts gaze (whether in the(More)
Designers today use a variety of artifacts — both physical and digital — in the course of documenting their work. Physical and digital media have significantly different affordances and organizing metaphors: most notably, paper remains the preferable medium for sketching but lacks the sharing affor-dances of digital media. Augmented paper interactions(More)
Although certain forms of epilepsy have long been suspected to be inherited, heterogeneity has made it difficult to find the genes responsible for any subtypes. We found that families ascertained through patients with juvenile myoclonic epilepsy show linkage with the BF and HLA loci on human chromosome 6. There is some evidence that the locus may be outside(More)
We studied the first clinical manifestations of 72 complex partial seizures (CPS) in 17 drug-resistant patients. CPS were indicated to be of hippocampal-amygdalar origin by scalp and depth EEG. We asked: (a) Do all CPS of hippocampal-amygdalar origin start with an initial motionless stare and/or oroalimentary automatisms? (b) If not, what other clinical(More)
We examined the inheritance of juvenile myoclonic epilepsy (JME). We looked at both the trait of "epilepsy" and the trait of "epilepsy-plus-EEG abnormalities," since EEG abnormalities are frequently found in the clinically unaffected sibs of JME patients. We tested several modes of inheritance including the fully penetrant recessive and several two-locus(More)
In 15 patients we hypothesized the origin of epilepsies to be 'extratemporal' based on videotaped seizures and surface EEG. Neuropsychological tests and neuroimaging (CAT, MRI, and PET scans) were then compared to the hypothesized ictal sites. Neuropsychological tests were abnormal in 86.6% and FDG-PET scans were abnormal in 73%. The neuropsychological(More)