The archerfish uses motor adaptation in shooting to correct for changing physical conditions.

The archerfish is unique in its ability to hunt by shooting a jet of water from its mouth that hits insects situated above the water's surface. To aim accurately, the fish needs to overcome physical factors including changes in light refraction at the air-water interface. Nevertheless, archerfish can still hit the target with a high success rate under changing conditions. One possible explanation for this extraordinary ability is that it is learned by trial and error through a motor adaptation process. We tested this possibility by characterizing the ability of the archerfish to adapt to perturbations in the environment to make appropriate adjustments to its shots. We introduced a perturbing airflow above the water tank of the archerfish trained to shoot at a target. For each trial shot, we measured the error, i.e., the distance between the center of the target and the center of the water jet produced by the fish. Immediately after the airflow perturbation, there was an increase in shot error. Then, over the course of several trials, the error was reduced and eventually plateaued. After the removal of the perturbation, there was an aftereffect, where the error was in the opposite direction but washed out after several trials. These results indicate that archerfish can adapt to the airflow perturbation. Testing the fish with two opposite airflow directions indicated that adaptation took place within an egocentric frame of reference. These results thus suggest that the archerfish is capable of motor adaptation, as indicated by data showing that the fish produced motor commands that anticipated the perturbation.

Nurses under fire: Insights from testimonies of community nurses and midwives in nonhospital settings in the southern Israel conflict zone.

Nurses-with or without prehospital care training-may find themselves delivering immediate care to injured individuals outside a healthcare facility, sometimes even in situations where their own life is at risk. This study explores the experiences of community nurses and midwives who provided immediate care during the Hamas militant movement's attack in southern Israel. The researchers collected and analyzed eight nurse and midwife survivors' testimonies published in digital media to gain a deeper understanding of their perspectives. Through qualitative content analysis, common themes, patterns, and insights were identified. The study aimed to contribute valuable knowledge in this field and followed the Consolidated Criteria for Reporting Qualitative Research (COREQ) checklist for methodological rigor. Two themes emerged from the testimonies, focusing on the nurses' swift realization of necessary action under fire and resilience and ingenuity in practice. Despite lacking training and resources, the nurses professionally assessed the situation and improvised creative solutions to care for the wounded. Although they had no prehospital emergency care background, community nurses and midwives were able to respond effectively, providing lifesaving care. The findings highlight the nurses' resilience, adaptability, and dedication in unprecedented situations. However, the study also emphasizes the importance of providing all nurses with baseline prehospital care training and structured planning of this care to empower them to deliver optimal patient care in uncertain and dangerous conditions, especially in and around conflict and disaster zones.

Nursing roles in disaster zones: Experiences and lessons from Turkey's 2023 earthquakes.

BACKGROUND: Disasters affect human health and well-being globally. Nursing plays a vital role in disaster preparedness and response, ensuring efficient early care coordination and delivering effective field treatment. AIM: This study investigates the challenges an Israeli humanitarian delegation encountered during their response to major earthquakes in Turkey in 2023. It explicitly focuses on difficulties in preparation, operations, and collaboration with local teams. The study further analyzes the findings and extracts valuable lessons from the mission. METHODS: Using a qualitative descriptive design, 22 out of 32 nurses involved in delegation participated in three focus group discussions within two months of returning to Israel. The discussions were recorded, transcribed verbatim, and analyzed thematically. The study followed the COREQ guidelines, ensuring comprehensive reporting and methodological rigor in qualitative research. FINDINGS: The study's main findings spanned predeparture preparation, mission challenges in the disaster zone, and postmission lessons, each highlighted by subthemes and participant quotations. A strong sense of mission was evident among the participants, along with frustration at inefficient time management prior to deployment. Many participants noted additional challenges, related to the difficulty of working in multiple languages and across cultures, and the opportunities for resolution. Finally, participants called for better psychological support following the mission. CONCLUSION: Nurses in disaster zones offer valuable insights to enhance preparation, cross-cultural communication, and postmission implementation. NURSING AND HEALTH POLICY IMPLICATIONS: Nurse managers and healthcare policymakers can utilize this study's findings to develop future nursing training programs in disaster-related skills. Additionally, it can help foster collaboration among international healthcare teams.

Figure-ground segmentation based on motion in the archerfish.

Figure-ground segmentation is a fundamental process in visual perception that involves separating visual stimuli into distinct meaningful objects and their surrounding context, thus allowing the brain to interpret and understand complex visual scenes. Mammals exhibit varying figure-ground segmentation capabilities, ranging from primates that can perform well on figure-ground segmentation tasks to rodents that perform poorly. To explore figure-ground segmentation capabilities in teleost fish, we studied how the archerfish, an expert visual hunter, performs figure-ground segmentation. We trained archerfish to discriminate foreground objects from the background, where the figures were defined by motion as well as by discontinuities in intensity and texture. Specifically, the figures were defined by grating, naturalistic texture, and random noise moving in counterphase with the background. The archerfish performed the task well and could distinguish between all three types of figures and grounds. Their performance was comparable to that of primates and outperformed rodents. These findings suggest the existence of a complex visual process in the archerfish visual system that enables the delineation of figures as distinct from backgrounds, and provide insights into object recognition in this animal.

A telencephalon cell type atlas for goldfish reveals diversity in the evolution of spatial structure and cell types.

Teleost fish form the largest group of vertebrates and show a tremendous variety of adaptive behaviors, making them critically important for the study of brain evolution and cognition. The neural basis mediating these behaviors remains elusive. We performed a systematic comparative survey of the goldfish telencephalon. We mapped cell types using single-cell RNA sequencing and spatial transcriptomics, resulting in de novo molecular neuroanatomy parcellation. Glial cells were highly conserved across 450 million years of evolution separating mouse and goldfish, while neurons showed diversity and modularity in gene expression. Specifically, somatostatin interneurons, famously interspersed in the mammalian isocortex for local inhibitory input, were curiously aggregated in a single goldfish telencephalon nucleus but molecularly conserved. Cerebral nuclei including the striatum, a hub for motivated behavior in amniotes, had molecularly conserved goldfish homologs. We suggest elements of a hippocampal formation across the goldfish pallium. Last, aiding study of the teleostan everted telencephalon, we describe substantial molecular similarities between goldfish and zebrafish neuronal taxonomies.

Super-resolution reconstruction in ultrahigh-field MRI.

Magnetic resonance imaging (MRI) is a highly significant imaging platform for a variety of medical and research applications. However, the low spatiotemporal resolution of conventional MRI limits its applicability toward rapid acquisition of ultrahigh-resolution scans. Current aims at high-resolution MRI focus on increasing the accuracy of tissue delineation, assessments of structural integrity, and early identification of malignancies. Unfortunately, high-resolution imaging often leads to decreased signal/noise (SNR) and contrast/noise (CNR) ratios and increased time cost, which are unfeasible in many clinical and academic settings, offsetting any potential benefits. In this study, we apply and assess the efficacy of super-resolution reconstruction (SRR) through iterative back-projection utilizing through-plane voxel offsets. SRR allows for high-resolution imaging in condensed time frames. Rat skulls and archerfish samples, typical models in academic settings, were used to demonstrate the impact of SRR on varying sample sizes and applicability for translational and comparative neuroscience. The SNR and CNR increased in samples that did not fully occupy the imaging probe and in instances where the low-resolution data were acquired in three dimensions, while the CNR was found to increase with both 3D and 2D low-resolution data reconstructions when compared with directly acquired high-resolution images. Limitations to the applied SRR algorithm were investigated to determine the maximum ratios between low-resolution inputs and high-resolution reconstructions and the overall cost effectivity of the strategy. Overall, the study revealed that SRR could be used to decrease image acquisition time, increase the CNR in nearly all instances, and increase the SNR in small samples.

Boundary vector cells in the goldfish central telencephalon encode spatial information.

Navigation is one of the most fundamental cognitive skills for the survival of fish, the largest vertebrate class, and almost all other animal classes. Space encoding in single neurons is a critical component of the neural basis of navigation. To study this fundamental cognitive component in fish, we recorded the activity of neurons in the central area of the goldfish telencephalon while the fish were freely navigating in a quasi-2D water tank embedded in a 3D environment. We found spatially modulated neurons with firing patterns that gradually decreased with the distance of the fish from a boundary in each cell's preferred direction, resembling the boundary vector cells found in the mammalian subiculum. Many of these cells exhibited beta rhythm oscillations. This type of spatial representation in fish brains is unique among space-encoding cells in vertebrates and provides insights into spatial cognition in this lineage.

Learning from critical care nurses' wartime experiences and their long-term impacts.

BACKGROUND: The history of critical care nursing is intertwined with that of battlefield nursing, where for almost 200 years, nurses worked to save injured soldiers' lives, risking their own physical and emotional injuries. Today, with nurses increasingly deployed to provide critical care during natural, man-made and public health crises that can resemble battlefield situations, there is much to learn from battlefield nurses. AIM: This qualitative study aims to explore the lessons of the experiences of civilian nurses deployed to Israeli battlefields in three wars between 1967 and 1982. METHODS: Qualitative, semi-structured, in-depth interviews were conducted with twenty-two former military nurses who were deployed in three wars between 1967 and 1982. We analysed interview transcripts using a content analysis approach. COREQ, a 32-item checklist, guided method selection, data analysis and the findings' presentation. FINDINGS: Data analysis revealed three main themes, with ten related subthemes: Field Service Challenges, Coping with Challenges, and Nurses' Need for Recognition. CONCLUSION: The findings identify mental, emotional, and organizational issues resulting from nurses' wartime experiences, revealing numerous opportunities for better preparing and supporting critical care nurses before, during, and after crises. RELEVANCE TO CLINICAL PRACTICE: Critical care nursing during crises, such as wartime, is unique but increasingly common. The memories and ongoing impact of those experiences offer invaluable information for nursing and health policy stakeholders planning for future deployments during wartime or other disasters such as the COVID-19 pandemic and the Russo-Ukrainian war.

Toward Naturalistic Neuroscience of Navigation: Opportunities in Coral Reef Fish.

The ability to navigate in the world is crucial to many species. One of the most fundamental unresolved issues in understanding animal navigation is how the brain represents spatial information. Although navigation has been studied extensively in many taxa, the key efforts to determine the neural basis of navigation have focused on mammals, usually in lab experiments, where the allocated space is typically very small; e.g., up to one order of magnitude the size of the animal, is limited by artificial walls, and contains only a few objects. This type of setting is vastly different from the habitat of animals in the wild, which is open in many cases and is virtually limitless in size compared to its inhabitants. Thus, a fundamental open question in animal navigation is whether small-scale, spatially confined, and artificially crafted lab experiments indeed reveal how navigation is enacted in the real world. This question is difficult to study given the technical problems associated with in vivo electrophysiology in natural settings. Here, we argue that these difficulties can be overcome by implementing state of the art technology when studying the rivulated rabbitfish, Siganus rivulatus as the model animal. As a first step toward this goal, using acoustic tracking of the reef, we demonstrate that individual S. rivulatus have a defined home range of about 200 m in length, from which they seldom venture. They repeatedly visit the same areas and return to the same sleeping grounds, thus providing evidence for their ability to navigate in the reef environment. Using a clustering algorithm to analyze segments of daily trajectories, we found evidence of specific repeating patterns in behavior within the home range of individual fish. Thus, S. rivulatus appears to have the ability to carry out its daily routines and revisit places of interest by employing sophisticated means of navigation while exploring its surroundings. In the future, using novel technologies for wireless recording from single cells of fish brains, S. rivulatus can emerge as an ideal system to study the neural basis of navigation in natural settings and lead to "electrophysiology in the wild."

Cultural Competence of Mental Health Nurses in Israel.

Israel's diverse culture presents challenges to the nation's health care system; lack of culturally appropriate care adversely affects overall quality of care. Therefore, cultural competence needs strengthening, especially among mental health nurses, for whom communication is the essence of treatment. The current study aimed to examine and evaluate the degree of cultural competence of mental health nurses in Israel. We sought to determine whether demographic variables, such as age, sex, and other characteristics, have effects on cultural competence. This study used a structured self-report questionnaire to survey 107 Israeli mental health nurses about their perceptions of their own cultural competence. Most participants attributed great importance to sociocultural aspects of patient care (mean score = 4, SD = 0.628) and were knowledgeable, but a majority (mean score = 3, SD = 0.83) reported difficulties implementing their knowledge during treatment. Cultural knowledge and awareness correlated with personal characteristics, such as sex and country of origin. There were gaps between cultural knowledge and the ability to apply existing knowledge in practice. A need exists not only for ongoing training in and maintenance of cultural knowledge, but also for tools to implement culturally appropriate care. [Journal of Psychosocial Nursing and Mental Health Services, 60(11), 33-39.].

Shared trauma during the COVID-19 pandemic: Psychological effects on Israeli mental health nurses.

Mental health nurses, tasked with the constant care of clients undergoing mental health treatment, have faced unique challenges arising from the uncertain outcomes of the COVID-19 pandemic. The shared exposure of both nurses and their patients to a traumatic event such this pandemic leads to additional challenges and ways of coping. The psychological effects of this shared trauma on mental health nurses arising from the pandemic are the subject of this study. An online survey was used to examine personal levels of anxiety and concern, personal and national resilience (NR), and posttraumatic growth (PTG) among 183 mental health nurses working in mental health services in Israel. Overall, the study revealed moderate levels of concern and relatively low levels of anxiety, with significant negative correlations between personal and NR and levels of concern and anxiety. Higher levels of personal and NR were related to lower levels of concern and anxiety, and there was a significant positive correlation between assessments of personal resilience and NR. A significant positive correlation was found between personal and NR and PTG. Higher religiosity was associated with higher resilience, and higher professional seniority was related to higher PTG. Finally, results for particular demographic subgroups indicate that in Israel, special attention should be given to those mental health nurses who have immigrated to Israel, are non-Jews or have less professional experience.

Recognition of natural objects in the archerfish.

Recognition of individual objects and their categorization is a complex computational task. Nevertheless, visual systems can perform this task in a rapid and accurate manner. Humans and other animals can efficiently recognize objects despite countless variations in their projection on the retina due to different viewing angles, distance, illumination conditions and other parameters. To gain a better understanding of the recognition process in teleosts, we explored it in archerfish, a species that hunts by shooting a jet of water at aerial targets and thus can benefit from ecologically relevant recognition of natural objects. We found that archerfish not only can categorize objects into relevant classes but also can do so for novel objects, and additionally they can recognize an individual object presented under different conditions. To understand the mechanisms underlying this capability, we developed a computational model based on object features and a machine learning classifier. The analysis of the model revealed that a small number of features was sufficient for categorization, and the fish were more sensitive to object contours than textures. We tested these predictions in additional behavioral experiments and validated them. Our findings suggest the existence of a complex visual process in the archerfish visual system that enables object recognition and categorization.

From fish out of water to new insights on navigation mechanisms in animals.

Navigation is a critical ability for animal survival and is important for food foraging, finding shelter, seeking mates and a variety of other behaviors. Given their fundamental role and universal function in the animal kingdom, it makes sense to explore whether space representation and navigation mechanisms are dependent on the species, ecological system, brain structures, or whether they share general and universal properties. One way to explore this issue behaviorally is by domain transfer methodology, where one species is embedded in another species' environment and must cope with an otherwise familiar (in our case, navigation) task. Here we push this idea to the limit by studying the navigation ability of a fish in a terrestrial environment. For this purpose, we trained goldfish to use a Fish Operated Vehicle (FOV), a wheeled terrestrial platform that reacts to the fish's movement characteristics, location and orientation in its water tank to change the vehicle's; i.e., the water tank's, position in the arena. The fish were tasked to "drive" the FOV towards a visual target in the terrestrial environment, which was observable through the walls of the tank, and indeed were able to operate the vehicle, explore the new environment, and reach the target regardless of the starting point, all while avoiding dead-ends and correcting location inaccuracies. These results demonstrate how a fish was able to transfer its space representation and navigation skills to a wholly different terrestrial environment, thus supporting the hypothesis that the former possess a universal quality that is species-independent.

Nursing Informatics in Israel From a Historical Perspective.

The field of nursing informatics is expanding in Israel, which is known as a start-up nation. This study is a systematic literature review aimed to obtain a historical perspective of the Israel's nursing informatics development. To study how nursing informatics has evolved in Israel over the past 20 years, we analyzed two major issues: (1) the development of the nursing informatics field over these years; and (2) nursing informatics studies that were carried out by nurses. The main criteria for choosing these studies were: (1) nursing informatics research conducted in Israel; (2) investigated by nurses; and (3) published in academic international journals, including PhD dissertations. Thirty studies were located, and two main issues were identified: nurse managers who were engaged in health information technology were not recognized as nursing informatics practitioners, and a minority of nurses performed nursing informatics researches. Although many health information technology projects were and are performed in Israel, the nursing informatics field is not fully recognized by Israeli nurses. Therefore, it is essential for Israeli nurses to understand the importance of advancing the nursing informatics body of knowledge, which will give nurses the authorization to become influential as health information technology professionals in areas such as health education, practice, and research-for the benefit of patients.

A Generalized Linear Model of a Navigation Network.

Navigation by mammals is believed to rely on a network of neurons in the hippocampal formation, which includes the hippocampus, the medial entorhinal cortex (MEC), and additional nearby regions. Neurons in these regions represent spatial information by tuning to the position, orientation, and speed of the animal in the form of head direction cells, speed cells, grid cells, border cells, and unclassified spatially modulated cells. While the properties of single cells are well studied, little is known about the functional structure of the network in the MEC. Here, we use a generalized linear model to study the network of spatially modulated cells in the MEC. We found connectivity patterns between all spatially encoding cells and not only grid cells. In addition, the neurons' past activity contributed to the overall activity patterns. Finally, position-modulated cells and head direction cells differed in the dependence of the activity on the history. Our results indicate that MEC neurons form a local interacting network to support spatial information representations and suggest an explanation for their complex temporal properties.

Representation of edges, head direction, and swimming kinematics in the brain of freely-navigating fish.

Like most animals, the survival of fish depends on navigation in space. This capacity has been documented in behavioral studies that have revealed navigation strategies. However, little is known about how freely swimming fish represent space and locomotion in the brain to enable successful navigation. Using a wireless neural recording system, we measured the activity of single neurons in the goldfish lateral pallium, a brain region known to be involved in spatial memory and navigation, while the fish swam freely in a two-dimensional water tank. We found that cells in the lateral pallium of the goldfish encode the edges of the environment, the fish head direction, the fish swimming speed, and the fish swimming velocity-vector. This study sheds light on how information related to navigation is represented in the brain of fish and addresses the fundamental question of the neural basis of navigation in this group of vertebrates.

Feature integration theory in non-humans: Spotlight on the archerfish.

The ability to visually search, quickly and accurately, for designated items in cluttered environments is crucial for many species to ensure survival. Feature integration theory, one of the most influential theories of attention, suggests that certain visual features that facilitate this search are extracted pre-attentively in a parallel fashion across the visual field during early visual processing. Hence, if some objects of interest possess such a feature uniquely, it will pop out from the background during the integration stage and draw visual attention immediately and effortlessly. For years, visual search research has explored these ideas by investigating the conditions (and visual features) that characterize efficient versus inefficient visual searches. The bulk of research has focused on human vision, though ecologically there are many reasons to believe that feature integration theory is applicable to other species as well. Here we review the main findings regarding the relevance of feature integration theory to non-human species and expand it to new research on one particular animal model - the archerfish. Specifically, we study both archerfish and humans in an extensive and comparative set of visual-search experiments. The findings indicate that both species exhibit similar behavior in basic feature searches and in conjunction search tasks. In contrast, performance differed in searches defined by shape. These results suggest that evolution pressured many visual features to pop out for both species despite cardinal differences in brain anatomy and living environment, and strengthens the argument that aspects of feature integration theory may be generalizable across the animal kingdom.

Forming an Affiliation Between Two Culturally Different Academic Institutions of Nursing Studies.

INTRODUCTION: This article describes the association of two culturally different institutions opening a joint Bachelor of Science in Nursing (BSN) program for ultra-Orthodox Jewish (Haredi) women in order to enable them to find jobs due to changes in their society and increasing global demand for nurses in the labor market. The objective of this description is to illustrate the efforts and changes needed to facilitate the affiliation of two culturally and ideologically different organizations and the implications and conclusions of such a program. METHODS: The study is based on interviews with past administrators, a review of the literature, and supporting institution documents. CONCLUSIONS: A joint nursing academic program was founded by two culturally different educational institutions for the ultra-Orthodox Jewish women population. Creating a culturally sensitive nursing academic program helped ultra-Orthodox women acquire an academic profession which enabled their integration into the academic professional's work world and add more nurses to the labor market.The authors reviewed the efforts and changes needed to facilitate the affiliation of two culturally and ideologically different organizations based on the Bolman and Deal four frames model.