Article
Materials Science, Multidisciplinary
Vikrant Kumar, Caroline Yu, Christine K. McGinn, Krista E. Perks, Sarah M. Thompson, Nathaniel B. Sawtell, Ioannis Kymissis
Summary: This paper presents an electrode array and system that can stimulate specific regions of an electroreceptor array, providing potential for high spatial resolution stimulation and mapping of electrosensory systems.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Biology
Erika L. Schumacher, Bruce A. Carlson, Catherine Emily Carr
Summary: The study found that the evolution of new electrosensory systems is associated with changes in the size of specific brain regions. Regardless of brain size, individual major brain regions can independently undergo changes in size, which may be an adaptation to new behavioral innovations.
Article
Multidisciplinary Sciences
Alexandra Barayeu, Ramona Schaefer, Jan Grewe, Jan Benda
Summary: This study investigated the behavioral relevance and underlying mechanisms of beat perception in electric fish. The results revealed strong responses of electroreceptor afferents to mistuned octaves, suggesting that common methods for extracting amplitude modulations are not sufficient to explain these responses. Mathematical reasoning and simulations indicate that smoothing out the half-wave rectification process may be necessary for a better understanding of beat perception at carrier octaves.
Article
Biology
Javier Nogueira, Maria E. Castello, Carolina Lescano, Angel A. Caputi
Summary: Early sensory relay circuits in the vertebrate medulla have a cerebellum-like organization specialized for comparing primary afferent inputs with central expectations, often with a dual output carried by center ON and center OFF neurons. In the electrosensory lateral line lobe of Gymnotiform weakly electric fish, basilar pyramidal neurons (representing 'ON' cells) and non-basilar pyramidal neurons (representing 'OFF' cells) exhibit distinct intrinsic electrophysiological properties.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Ziqi Wang, Maurice J. Chacron
Summary: The study revealed that correlations between neural activities of hindbrain electrosensory neurons can enhance information about the structure of natural communication stimuli, allowing downstream brain areas to reliably discriminate between different waveforms. This suggests that synergistic interactions between neural activities can improve discrimination performance.
SCIENTIFIC REPORTS
(2021)
Article
Biology
Angel A. Caputi, Joseph C. Waddell, Pedro A. Aguilera
Summary: This article introduces and tests a simple model for describing a neural network that controls the electro-sensory regulation of an electromotor pacemaker. The model effectively explains the novelty detection characteristics of electrosensory input and provides a good description of the electrosensory-electromotor loop.
Review
Thermodynamics
Wuyi Ming, Shengfei Zhang, Guojun Zhang, Jinguang Du, Jun Ma, Wenbin He, Chen Cao, Kun Liu
Summary: This study provides a systematic review of the progress in modelling the electrical discharge machining (EDM) process. It compares and analyzes the existing finite element method (FEM) models, molecular dynamics (MD) models, and flow field models, and suggests future research areas of interest.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Review
Ecology
Daphne Soares, Kathryn Gallman, Maria Elina Bichuette, Eric S. Fortune
Summary: The adaptive-shift hypothesis suggests that cave-dwelling species have evolved from ancestor species in surface habitats by exploiting exaptations for subterranean life. Weakly electric Gymnotiform fishes, nocturnal South American teleost fishes, have features that appear to be exaptations for troglobitic life. The electric fish Eigenmannia vicentespelaea, endemic to a cave in Brazil, generates stronger electric fields compared to its surface relative, possibly due to lack of predation pressure or enhanced sensory abilities.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Biology
Antonio Ramos, Marco P. Soares dos Santos
Summary: This study used the finite element method to simulate the effects of electric field stimulation on the bone-implant interface and the ability to detect different interface scenarios. The results show that simplified bone geometry models cannot accurately predict electric stimulation in different interface scenarios, while realistic models can better predict bone-implant fixation states. These findings are important for integrating co-surface capacitive technology into bioelectronic implants.
COMPUTERS IN BIOLOGY AND MEDICINE
(2023)
Article
Chemistry, Physical
Ailin Chen, Komal Thind, Kahraman G. Demir, Grace X. Gu
Summary: Study of fish scales can replicate their flexibility and puncture resistance, focusing on complex interactions between overlapping scales and modeling the transition from linear to nonlinear behavior. Geometric analysis helps predict scale flexibility, validated through finite element analysis for efficient optimization of scale-like designs.
Article
Food Science & Technology
Sebahattin Serhat Turgut, Erdogan Kucukoner, Aberham Hailu Feyissa, Erkan Karacabey
Summary: The OAD system improves the drying characteristics of potato slices and reduces drying time, with the level of applied voltage and air temperature being effective on reducing drying time. A 3D mechanistic model is developed to better understand the changes in potato slices during OAD.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2021)
Article
Multidisciplinary Sciences
Jie Song, Peng Si, Hongliang Hua, Zhongxin Li
Summary: This study presents a novel DVA-beam element and an element deactivating method for rapid modeling and computation of the DVA-beam system. The reliability and convenience of the proposed method are validated through numerical examples. The effectiveness and applicability of the DVA-beam element in engineering optimization are investigated and impressive performance is observed.
Article
Energy & Fuels
Manuel Pineda-Arciniega, Marco A. A. Arjona, Concepcion Hernandez, Rafael Escarela-Perez
Summary: This paper presents a methodology to program the weak coupling between magnetic and structural vector fields in an electromagnetic device modeled in 2D. It proposes a numerical solution using the finite element method and provides a flexible and intuitive methodology for implementing the complex mathematics into a computer program. The proposed approach is validated by comparing the results with a commercial software.
Article
Biology
Angel A. Caputi, Alejo Rodriguez-Cattaneo, Joseph C. Waddell, Ana Carolina Pereira, Pedro A. Aguilera
Summary: This study reveals that weakly electric fish Gymnotus omarorum exhibits novelty detection potential in response to rapid increases in electric image amplitude. This potential occurs in the first electrosensory relay and predicts subsequent behavioral novelty response. Current source density analyses indicate that it originates in specific layers of the electrosensory lobe where the main output neurons are located. Observation of ON and OFF units shows that firing probability of OFF units decreases drastically after the increase in electric image, while ON units exhibit a sharp increase in firing rate followed by rapid adaptation. These findings suggest that the signals encoded by ON neurons contribute to the novelty detection potential, propagate through hierarchical organization, and accelerate the electric organ discharge rate.
Article
Engineering, Electrical & Electronic
Herbert De Gersem, Laura A. M. D'Angelo
Summary: This paper investigates the consideration of skew in single- and multi-slice 2-D finite-element machine models by constructing a set of biorthogonal basis functions and weakly enforcing the tangential continuity of the magnetic vector potential. Harmonic filtering due to skew is observed in single-slice models, while multi-slice models with different numbers of stator and rotor slices improve modeling accuracy.
IEEE TRANSACTIONS ON MAGNETICS
(2021)