Article
Ophthalmology
Ting Zhang, Jinglin Lu, Limei Sun, Songshan Li, Li Huang, You Wang, Zeyu Li, Liming Cao, Xiaoyan Ding
Summary: The study aimed to summarize flicker electroretinogram responses in healthy children using the RETeval system. Results showed implicit times were not correlated with demographics, while amplitudes were dependent on demographics. The study found that implicit times and amplitudes matured over the first decade of life, providing valuable reference data for pediatric patients undergoing ERG assessment.
TRANSLATIONAL VISION SCIENCE & TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Alexander Maye, Raika Rauterberg, Andreas K. Engel
Summary: The spatially-coded SSVEP BCI utilizes changes in the topography of visual evoked response to flickering stimulation, allowing for a gaze-free operation that reduces visual fatigue. It achieves high classification accuracies and has a simplified setup. The study introduces dynamic stopping methods and shows an increased information transfer rate for spatially-coded BCIs.
Article
Neurosciences
Lydia M. Mathger, Kevin Zhao, Lena Herbst
Summary: Research on retinal specializations in skates revealed uneven distribution of photoreceptors, with a horizontally located visual streak showing higher density. Photoreceptors varied in length and thickness at different locations, and displayed tilting within the eye. These findings provide insights into the animal's anatomy, lifestyle, and habitat types.
JOURNAL OF COMPARATIVE NEUROLOGY
(2021)
Article
Neurosciences
Britta U. Westner, James Lubell, Mads Jensen, Sigbjorn Hokland, Sarang S. Dalal
Summary: Optically pumped magnetometers (OPMs) offer a flexible and contactless alternative for measuring brain and retinal activity without the need for cryogenic cooling. Magnetoretinographic (MRG) activity shows familiar signals similar to electroretinogram and shares a significant amount of information in both simultaneous and separate measurements.
Article
Ecology
Ezekiel Martin, Henry L. Steinmetz, Seo Young Baek, Frederick R. Gilbert, Nicholas C. Brandley
Summary: Some organisms have brightly colored structures that are only visible when they are in motion, such as wing parts visible during flight. The Carolina grasshopper uses its hindwings to startle and confuse predators before quickly returning to camouflage.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Biology
Marisa S. McDonald, Sitara Palecanda, Jonathan H. Cohen, Megan L. Porter
Summary: This study provides evidence of blue- and UV-sensitive photoreceptors in larvae of the Caribbean stomatopod species Neogonodactylus oerstedii, indicating that larval stomatopod eyes are more complex and similar to adult eyes than expected. The presence of multiple UV spectral channels suggests a previously uncharacterized molecular diversity and physiological functions in larval stomatopod eyes.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Neurosciences
Zijing Chen, Maggie Kerwin, Orlaith Keenan, Craig Montell
Summary: This study identified the structural requirements for TRP channel function in Drosophila photoreceptor cells, including the roles of the S4-S5 linker and the TRP domain, as well as the differential requirements for two highly conserved motifs in the TRP domain for activation and protein stability. Genetic complementation experiments revealed an intrasubunit interaction between the S4-S5 linker and the S5 segment in Drosophila photoreceptor cells, which contributes to channel activation.
JOURNAL OF NEUROSCIENCE
(2021)
Review
Biology
Kristian Donner
Summary: Time plays a crucial but often overlooked role in vision processing. Attention to temporal aspects in visual research has been limited, primarily focused on measuring resolution and integration. Studies on fundamental constraints in early vision can guide natural vision modeling across species and shed light on functional and evolutionary trade-offs.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Ophthalmology
Sumeer Singh, Laura E. E. Downie, Andrew J. J. Anderson
Summary: This study found that critical flicker-fusion frequency (CFF) is not a useful surrogate for visual fatigue symptoms, given its low correlation with scores on a visual fatigue symptom questionnaire.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Review
Ophthalmology
Jason McAnany, Oksana S. Persidina, Jason C. Park
Summary: The electroretinogram (ERG) is a noninvasive technique that evaluates retinal function and has become increasingly important in studying diabetic retinopathy. Recent clinical studies using various types of ERG have provided evidence of neural dysfunction in diabetic patients, even in those without apparent retinal vascular abnormalities. The ERG has the potential to play a growing role in understanding the natural history of neural dysfunction in diabetes and as an outcome measure in clinical trials targeting neural preservation in diabetic retinopathy.
SURVEY OF OPHTHALMOLOGY
(2022)
Article
Ophthalmology
Dhimas H. Sakti, Haipha Ali, Maria Korsakova, Nonna Saakova, Nina Mustafic, Clare L. Fraser, Robyn Jamieson, Elisa E. Cornish, John R. Grigg
Summary: The frequency of electronegative electroretinogram (ERG) in a tertiary ophthalmology centre was found to be 3.1%, with photoreceptor dystrophy being the main cause. Some patients had good vision with normal fundus or normal multimodal imaging.
CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
(2022)
Article
Biology
Lydia M. Mathger, Michael J. Bok, Jan Liebich, Lucia Sicius, Dan-Eric Nilsson
Summary: By investigating, analyzing, and simulating the changes in light intensity in the natural environment of the skate Leucoraja erinacea, we studied the pupil's response to light. The results showed that the skate pupil is nearly circular under low light and changes to a series of small triangular apertures under bright light. Additionally, there were individual differences in the dilation and constriction speeds of the pupil.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Biochemical Research Methods
Victor Rodriguez-lopez, Wilson Geisler, Carlos Dorronsoro
Summary: Tunable lenses enable the measurement of visual sensitivity to rapid changes in optical power, surpassing mechanical limits. Using this system, the spatiotemporal defocus sensitivity function (STDSF) and the limits of human defocus perception were measured for the first time.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Neurosciences
Joseph Bouskila, Maxime Bleau, Catarina Micaelo-Fernandes, Jean-Francois Bouchard, Maurice Ptito
Summary: Recent studies have shown that cannabinoid receptors play an important role in primate vision, specifically in cone-mediated responses. By using photopic flicker ERG and URB597 as a selective inhibitor, researchers were able to increase ffERG amplitudes at a frequency that solely recruits cone activity. These results support the involvement of FAAH-degraded molecules in cone-mediated vision in non-human primates.
Review
Medicine, General & Internal
Natalia D. Mankowska, Anna B. Marcinkowska, Monika Waskow, Rita I. Sharma, Jacek Kot, Pawel J. Winklewski
Summary: Critical flicker fusion frequency (CFF) is widely used in human and animal model studies, particularly in medicine for diagnostic purposes and in hyperbaric medicine. Current research shows a relationship between CFF and other electrophysiological methods, indicating the need for future research to better understand its utility.
MEDICINA-LITHUANIA
(2021)
Article
Meteorology & Atmospheric Sciences
Cayla Dean, Alexander Soloviev, Amy Hirons, Tamara Frank, Jon Wood
Article
Fisheries
T. A. Weidner, A. C. Hirons, A. Leavitt, D. W. Kerstetter
JOURNAL OF APPLIED ICHTHYOLOGY
(2017)
Article
Parasitology
Sarah A. Briggs, Christopher A. Blanar, Michael B. Robblee, Christopher B. Boyko, Amy C. Hirons
JOURNAL OF PARASITOLOGY
(2017)
Article
Marine & Freshwater Biology
Amy M. Heemsoth, Amy C. Hirons, Caroline M. Collatos, David W. Kerstetter
BULLETIN OF MARINE SCIENCE
(2020)
Article
Ornithology
Sarah E. Gumbleton, David W. Kerstetter, Christopher A. Blanar, Amy C. Hirons
Article
Multidisciplinary Sciences
Christopher A. Blanar, Joseph R. Hornbeck, David W. Kerstetter, Amy C. Hirons
Summary: This study found significant differences in fish communities between artificial reefs and natural reefs, with artificial reefs exhibiting greater variability. The trophic relationships were significantly influenced by general feeding strategy and phylogeny, and the differences in carbon and nitrogen isotopes between artificial and natural reefs were primarily driven by differences in fish community structure.
Article
Environmental Sciences
Samantha L. Shore, Dimitrios G. Giarikos, Lawrence K. Duffy, Mickie R. Edwards, Amy C. Hirons
Summary: This study established the first baseline of changing elemental concentrations in bowhead whale baleen over time (1958-1999). Most elements' concentrations in baleen increased with time, while location and sex were insignificant explanatory factors. These temporal fluctuations were most likely a product of environmental changes due to a warming climate and human activities.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Environmental Sciences
Mickie R. Edwards, Susana Cardenas-Alayza, Michael J. Adkesson, Mya Daniels-Abdulahad, Amy C. Hirons
Summary: Peru's coastal waters experience significant environmental fluctuations due to El Nino-La Nina-Southern Oscillation events, impacting the food web and diet of Peruvian fur seals. Stable isotope ratios are used to infer primary production and dietary variations, with correlations between N-15 values and ENSO conditions. The study suggests that ENSO conditions influence resource availability, potentially affecting pinniped foraging behavior and food web complexity.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Caitlyn Nay, James Gelsleichter, Sarah E. Hill, Amy C. Hirons, David W. Kerstetter
Summary: South Florida is a well-studied area for ecological mercury contamination. This study measured mercury concentrations in different tissues of seven bird species in the region, finding that a significant proportion of individuals exceeded toxicity thresholds for mercury-related effects. Certain species, particularly osprey, showed higher rates of threshold exceedances. Feather mercury concentrations had a lower rate of toxicity threshold exceedances and were not strongly correlated with internal tissue concentrations in most cases.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Marine & Freshwater Biology
Catherine Kooyomjian, Dimitrios G. Giarikos, Michael J. Adkesson, Amy C. Hirons
Summary: The transfer of 15 elements between Peruvian fur seal dam and pup pairs was studied, revealing significantly higher concentrations of arsenic in pup vibrissae and milk compared to dams, suggesting potential contamination and impact on survival and population health.
MARINE MAMMAL SCIENCE
(2022)
Article
Veterinary Sciences
Catherine Kooyomjian, Dimitrios Giarikos, Michael Adkesson, Amy C. Hirons
Summary: In this study, concentrations of 15 trace elements in vibrissae and serum of two sympatric pinniped species at Punta San Juan, Peru were determined. Results showed higher concentrations in vibrissae compared to serum, suggesting potential impacts of environmental contaminants on the health of these pinnipeds.
JOURNAL OF WILDLIFE DISEASES
(2022)
Article
Multidisciplinary Sciences
Susana Cardenas-Alayza, Michael J. Adkesson, Mickie R. Edwards, Amy C. Hirons, Dimitri Gutierrez, Yann Tremblay, Valentina Franco-Trecu
Summary: Determining trophic habits of predator communities is important to understand interspecific interactions and their response to environmental changes. This study analyzed whisker samples from South American fur seals and sea lions to investigate the effect of ocean warming events on their feeding habits. The results showed that these species shifted to consuming lower trophic level prey during the warming events, and there was an increased niche segregation among individuals, indicating a more differentiated trophic assemblage. Female sea lions exhibited the largest response to the warming scenario.
Article
Marine & Freshwater Biology
Yvanna M. Strait, Amy C. Hirons
Article
Marine & Freshwater Biology
Graysen D. Boehning, Barbara J. Brunnick, Stefan Harzen, Amy C. Hirons
Summary: This study identifies a residential group of coastal bottlenose dolphins in the northwestern Atlantic waters off the coast of Palm Beach County, Florida. The presence of individuals with high site fidelity indicates that the region is used as a permanent habitat for some individuals, while the presence of transient animals may indicate a possible bridge between populations living to the north and south of the region.
Article
Oceanography
Alexander V. Soloviev, Amy Hirons, Christopher Maingot, Cayla W. Dean, Richard E. Dodge, Alexander E. Yankovsky, Jon Wood, Robert H. Weisberg, Mark E. Luther, Julian P. McCreary
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2017)