Impairment of Figure-Ground and Shape Discrimination After Lesion of Nucleus Subpretectalis in Pigeons

Mentors: Olga Lazareva and Martin AcerboOur earlier research has shown that nucleus rotundus, a thalamic nucleus processing visual information in pigeons, together with its inhibitory complex, is differentially activated in birds performing figure-ground discrimination, color discrimination, and shape discrimination (Acerbo, McInnerney, et al., in preparation). In this study, we conducted bilateral chemical lesions of nucleus subpretectalis, a major inhibitory nucleus that regulates activity of nucleus rotundus but does not process visual information directly. We trained pigeons to simultaneously perform three visual discriminations (figureground, color, and shape) using the same displays. When birds learned to perform all three tasks at high levels of accuracy, we conducted the bilateral lesions of n. subpretectalis using ibotenic acid. After a period of recovery, the birds were retrained on the same tasks to evaluate the effect of lesion on maintenance of discriminations. Preliminary results indicate that lesion of nucleus subpretectalis has no effect on color discrimination, and impairs both shape and figure-ground discrimination. These results suggest that figure-ground segregation in avian brain may occur at the level of thalamus, rather than at the cortical level as it does in primates.Drake University, College of Arts & Sciences, Department of Psycholog

Collaborative Leadership in Action

The 46 fellows in the 2017 cohort of the UMass Boston Emerging Leaders Program worked with seven community partners on projects of strategic importance to these nonprofit and government organizations. The fellows contribute their professional skills and discover collaborative leadership through practice. The theme of our public symposium is “Collaborative Leadership in Action.” The fellows shared their insights about what collaborative leadership involves – its challenges and benefits – and what they take back to their workplaces

Making the Invisible Challenges and Opportunities Visible

The 41 fellows in the 2015 Emerging Leaders Program worked with community partners to generate the theme, “Making the Invisible Challenges and Opportunities Visible: Collaborative leadership for economic and social well-being. The projects provide fellows an opportunity to practice elements of collaborative leadership in peer-led teams working with multiple stakeholders. The projects focus on civic engagement, building a leadership base for Greater Boston that is ready to tackle the big challenges that ensure the broader economic and social well-being of the region. The project sponsor with whom each team works is a nonprofit or governmental organization with big goals. Each team begins the process by refining the scope of work, so they can best leverage their skills for the organization’s strategic needs

Direct measurements of mean Reynolds stress and ripple roughness in the presence of energetic forcing by surface waves

Author Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 123 (2018): 2494-2512, doi:10.1002/2017JC013252.Direct covariance observations of the mean flow Reynolds stress and sonar images of the seafloor collected on a wave‐exposed inner continental shelf demonstrate that the drag exerted by the seabed on the overlying flow is consistent with boundary layer models for wave‐current interaction, provided that the orientation and anisotropy of the bed roughness are appropriately quantified. Large spatial and temporal variations in drag result from nonequilibrium ripple dynamics, ripple anisotropy, and the orientation of the ripples relative to the current. At a location in coarse sand characterized by large two‐dimensional orbital ripples, the observed drag shows a strong dependence on the relative orientation of the mean current to the ripple crests. At a contrasting location in fine sand, where more isotropic sub‐orbital ripples are observed, the sensitivity of the current to the orientation of the ripples is reduced. Further, at the coarse site under conditions when the currents are parallel to the ripple crests and the wave orbital diameter is smaller than the wavelength of the relic orbital ripples, the flow becomes hydraulically smooth. This transition is not observed at the fine site, where the observed wave orbital diameter is always greater than the wavelength of the observed sub‐orbital ripples. Paradoxically, the dominant along‐shelf flows often experience lower drag at the coarse site than at the fine site, despite the larger ripples, highlighting the complex dynamics controlling drag in wave‐exposed environments with heterogeneous roughness.National Science Foundation Ocean Sciences Division Award Grant Number: 1356060; U.S. Geological Survey Coastal and Marine Geology Program2018-09-2

LGBT+ Youth Perspectives on Sexual Orientation and Gender Identity Questions in the Growing Up in Ireland Survey: A Qualitative Study

The increasing importance of identifying lesbian, gay, bisexual and transgender (LGBT+) populations is a key driver in changes to demographic data collection in representative surveys of youth. While such population-based data are rare, Growing Up in Ireland (GUI), an Irish, government-funded, longitudinal survey, includes sexual orientation and gender identity (SOGI) measurements. This qualitative study responds to a query from the GUI study team and aims to identify how best to collect SOGI data in future waves of GUI. A university Human Research Ethics Committee granted approval for online consultations with LGBT+ youth (n = 6) with experiential expertise in policy making. The research is underpinned by rights-based public patient involvement (PPI) with recorded discussions, which were transcribed and imported into NVivo 12, generating the theme “recognition in research, policy and society”. This co-created article, with the LGBT+ young PPI Panel members, commends the inclusion of SOGI data in GUI and recommends changes in question placement and phrasing. Aligning with best practice, the PPI members provide a template for wording on consecutive sex and gender questions, expanded sexual orientation identity categories and maintaining the existing well-phrased transgender question from GUI. This offers potential to improve the quality of the SOGI data collected and the experience of those completing the questionnaire. These findings extend beyond GUI, with relevance for surveys with youth populations. This paper underscores the potential and benefits of participatory approaches to research with youth and views their role beyond simply as sources of data

Disability Rights as a Necessary Framework for Crisis Standards of Care and the Future of Health Care

In this essay, we suggest practical ways to shift the framing of crisis standards of care toward disability justice. We elaborate on the vision statement provided in the 2010 Institute of Medicine (National Academy of Medicine) “Summary of Guidance for Establishing Crisis Standards of Care for Use in Disaster Situations,” which emphasizes fairness; equitable processes; community and provider engagement, education, and communication; and the rule of law. We argue that interpreting these elements through disability justice entails a commitment to both distributive and recognitive justice. The disability rights movement\u27s demand “Nothing about us, without us” requires substantive inclusion of disabled people in decision-making related to their interests, including in crisis planning before, during, and after a pandemic like Covid-19

Disability Rights as a Necessary Framework for Crisis Standards of Care and the Future of Health Care

In this essay, we suggest practical ways to shift the framing of crisis standards of care toward disability justice. We elaborate on the vision statement provided in the 2010 Institute of Medicine (National Academy of Medicine) “Summary of Guidance for Establishing Crisis Standards of Care for Use in Disaster Situations,” which emphasizes fairness; equitable processes; community and provider engagement, education, and communication; and the rule of law. We argue that interpreting these elements through disability justice entails a commitment to both distributive and recognitive justice. The disability rights movement's demand “Nothing about us, without us” requires substantive inclusion of disabled people in decision-making related to their interests, including in crisis planning before, during, and after a pandemic like Covid-19