Publications by authors named "Violeta Contreras-Ramirez"

Objective: The current International League Against Epilepsy (ILAE) guidelines classify focal seizures based on awareness, defined as successful postictal recall of ictal experiences, and exclude the use of responsiveness during seizures for classification. One reason for this exclusion is that responsiveness was thought to not be commonly tested during seizures. Our goal was to determine whether, in at least some settings, responsiveness testing during seizures is relatively common.

View Article and Find Full Text PDF

The International League Against Epilepsy (ILAE) classification of focal seizures uses recall of experiences post-ictally to assess for awareness and not ictal responsiveness to external stimuli, stating that responsiveness is often not tested. We investigated how clinicians assess for seizure awareness by administering an online survey. We found that most respondents use both responsiveness and recall to assess for awareness in the clinic (78%) and in the epilepsy monitoring unit (72%).

View Article and Find Full Text PDF

Background: After its landfall in Puerto Rico in 2017, Hurricane Maria caused the longest blackout in United States history, producing cascading effects on a health care system that had already been weakened by decades of public sector austerity and neoliberal health reforms. This article addresses how health care professionals and administrators experienced the health care system's collapse and the strategies used by them to meet their communities' health needs.

Methods: Data were collected between September 2018 and February 2020.

View Article and Find Full Text PDF

In this article, we explore the use of the image as a strategy to understand how natural disasters and coloniality impact the health of marginalized communities. We focus on the aftermath of Hurricane María in Puerto Rico and aim to describe how local people used the image as a strategy to challenge the invisibility fostered by coloniality and advocate for a more humane, equitable and effective public health response. We implemented a mixed methods research design including: (1) ethnographic observations, (2) qualitative in-depth interviews with 67 representatives of the health care system, (3) photographs they had taken as part of their experiences during and after the hurricane and (4) images from local newspapers and social media.

View Article and Find Full Text PDF

Background and Purpose- Lacunar strokes are subcortical infarcts with small size and high disability rates, largely due to injury of the corticospinal tract in the internal capsule (IC). Current rodent models of lacunar infarcts are created based on stereotactic coordinates. We tested the hypothesis that better understanding of the somatotopy of the IC and guiding the lesion with electrical stimulation would allow a more accurate lesion to the forelimb axons of the IC.

View Article and Find Full Text PDF

We studied the postnatal refinement of feedforward (FF) projections from ferret V1 to multiple cortical targets during the period around eye opening. Our goal was to establish (a) whether the developmental refinement of FF projections parallels that of feedback (FB) cortical circuits, and (b) whether FF pathways from V1 to different target areas refine with a similar rate. We injected the tracer CTb into V1 of juvenile ferrets, and visualized the pattern of labeled axon terminals in extrastriate cortex.

View Article and Find Full Text PDF

Understanding the neural basis of consciousness is fundamental to neuroscience research. Disruptions in cortico-cortical connectivity have been suggested as a primary mechanism of unconsciousness. By using a novel combination of positron emission tomography and functional magnetic resonance imaging, we studied anesthesia-induced unconsciousness and recovery using the α₂-agonist dexmedetomidine.

View Article and Find Full Text PDF