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476 Results Found

  • Article
  • Open Access
4 Citations
3,754 Views
17 Pages

28 October 2021

Ischemic stroke is one of the leading causes of death among the aged population in the world. Experimental stroke models with rodents play a fundamental role in the investigation of the mechanism and impairment of cerebral ischemia. For its celerity...

  • Article
  • Open Access
30 Citations
6,012 Views
17 Pages

8 January 2017

In contrast to herbaceous canopies and forests, savannas are grassland ecosystems with sparsely distributed individual trees, so the canopy is spatially heterogeneous and open, whereas the woody cover in savannas, e.g., tree cover, adversely affects...

  • Review
  • Open Access
17 Citations
16,358 Views
11 Pages

The brain is the most complex organ in the human body and it is divided into two hemispheres—left and right. The left hemisphere is responsible for control of the right side of our body, whereas the right hemisphere is responsible for control of the...

  • Article
  • Open Access
12 Citations
4,779 Views
16 Pages

A New Method for Forest Canopy Hemispherical Photography Segmentation Based on Deep Learning

  • Kexin Li,
  • Xinwang Huang,
  • Jingzhe Zhang,
  • Zhihu Sun,
  • Jianping Huang,
  • Chunxue Sun,
  • Qiancheng Xie and
  • Wenlong Song

19 December 2020

Research Highlights: This paper proposes a new method for hemispherical forest canopy image segmentation. The method is based on a deep learning methodology and provides a robust and fully automatic technique for the segmentation of forest canopy hem...

  • Article
  • Open Access
17 Citations
10,852 Views
28 Pages

A Stereovision Matching Strategy for Images Captured with Fish-Eye Lenses in Forest Environments

  • Pedro Javier Herrera,
  • Gonzalo Pajares,
  • María Guijarro,
  • José J. Ruz and
  • Jesús M. Cruz

31 January 2011

We present a novel strategy for computing disparity maps from hemispherical stereo images obtained with fish-eye lenses in forest environments. At a first segmentation stage, the method identifies textures of interest to be either matched or discarde...

  • Article
  • Open Access
18 Citations
5,410 Views
11 Pages

Impact of Orientation on the Vitamin D Weighted Exposure of a Human in an Urban Environment

  • Michael Schrempf,
  • Nadine Thuns,
  • Kezia Lange and
  • Gunther Seckmeyer

The vitamin D3-weighted UV exposure of a human with vertical posture was calculated for urban locations to investigate the impact of orientation and obstructions on the exposure. Human exposure was calculated by using the 3D geometry of a human and i...

  • Article
  • Open Access
743 Views
26 Pages

25 April 2025

Leaf Area Index (LAI) is one of the key parameters for characterizing leaf density, vegetation growth status, and canopy structure. Rapid, objective, and accurate acquisition of forest LAI is of great significance for studying forest ecosystems and f...

  • Article
  • Open Access
1,308 Views
13 Pages

Background: Congenital anosmia (CA) is a rare condition characterized by a lifelong inability to perceive odors, which significantly affects daily life and may be linked to broader neurodevelopmental alterations. This study aimed to investigate struc...

  • Article
  • Open Access
6 Citations
6,375 Views
23 Pages

Light Source Modules for Defect Detection on Highly Reflective Metallic Surfaces

  • Lih-Ping Huang,
  • Quang-Cherng Hsu,
  • Bao-Hsing Liu,
  • Chin-Fu Lin and
  • Chien-Hsianh Chen

28 April 2023

High strength and highly reflective metal sheets are widely applied in industry; industrial requirements for defect detection are extremely demanding, particularly in the aviation and automotive industries. Classifying and recognizing surface defects...

  • Article
  • Open Access
1 Citations
1,675 Views
15 Pages

Methods of Quantitative Assessment of the Response of Dilated Skin Blood Vessels to High-Energy Light Treatments

  • Anna Deda,
  • Aleksandra Lipka-Trawińska,
  • Barbara Błońska-Fajfrowska,
  • Wiktoria Odrzywołek,
  • Agata Lebiedowska,
  • Magdalena Hartman-Petrycka,
  • Dominika Wcisło-Dziadecka and
  • Sławomir Wilczyński

11 December 2024

Background: The techniques of choice used in the treatment of extensive vascular lesions of the face are methods based on high-energy light sources, such as lasers and IPL (intense pulsed light). The techniques commonly employed to detect blood vesse...

  • Article
  • Open Access
11 Citations
4,739 Views
13 Pages

Brain Hemispheric Asymmetry in Schizophrenia and Bipolar Disorder

  • Diogo Pinto,
  • Ricardo Martins,
  • António Macedo,
  • Miguel Castelo Branco,
  • João Valente Duarte and
  • Nuno Madeira

12 May 2023

Background: This study aimed to compare brain asymmetry in patients with schizophrenia (SCZ), bipolar disorder (BPD), and healthy controls to test whether asymmetry patterns could discriminate and set boundaries between two partially overlapping seve...

  • Article
  • Open Access
7 Citations
3,961 Views
26 Pages

29 November 2018

Accurate in situ leaf area index (LAI) estimates of forest plots are required to validate currently-used LAI map products. Woody-to-total area ratio ( α ) is a crucial parameter in converting the plant area index estimates of forest plots o...

  • Article
  • Open Access
5 Citations
4,362 Views
17 Pages

17 May 2020

This paper develops an algorithm to estimate vegetation canopy gap fraction (GF), taking advantage of the full Terrestrial Laser Scanner (TLS) resolution. After calculating the TLS angular resolution, the algorithm identifies the missing laser hits (...

  • Article
  • Open Access
3 Citations
4,905 Views
42 Pages

A Multiproxy Approach to the Reconstruction of an Ancient Manufacturing Technology: A Case Study of a Faience Ptolemaic Bowl from Tell Atrib (Nile Delta)

  • Małgorzata Zaremba,
  • Jerzy Trzciński,
  • Magdalena Rogulska,
  • Grzegorz Kaproń,
  • Fabian Welc and
  • Anna Południkiewicz

5 September 2020

Faience objects produced from the fourth millennium BC in ancient Egypt are considered as the first high-tech ceramics in human history. Despite extensive studies on manufacturing technology, many aspects of this complex technology remain a mystery a...

  • Article
  • Open Access
1 Citations
2,121 Views
14 Pages

14 February 2023

Drilling of a bone surface often occurs in clinical orthopaedic surgery. The position and orientation of the instrument are the most important factors in this process. Theoretically, some mechanical components may assist in orienting an instrument to...

  • Article
  • Open Access
8 Citations
3,646 Views
11 Pages

1 February 2021

A novel high-resolution method for forecasting cloud motion from all-sky images using deep learning is presented. A convolutional neural network (CNN) was created and trained with more than two years of all-sky images, recorded by a hemispheric sky i...

  • Article
  • Open Access
3 Citations
2,901 Views
12 Pages

8 June 2021

Reverse engineering applied to architectural restoration for the reconstruction of structural surfaces depends on metric precision. Sometimes there are elements on these surfaces whose value is even higher than the building itself. This is the case f...

  • Article
  • Open Access
383 Views
12 Pages

Vascular Steal in White Matter of Non-Flow-Limited Cerebral Hemispheres Following Acetazolamide Challenge Using Arterial Spin Labeling Magnetic Resonance Imaging

  • Rahim Ismail,
  • Denes Szekeres,
  • Stephen Smith,
  • Giovanni Schifitto,
  • Timothy Hoang,
  • Evan McConnell,
  • Matthew Bender and
  • Henry Wang

30 January 2026

Background: Vascular disease is a known risk factor for the development of leukoaraiosis. Assessment of cerebral blood flow (CBF) was performed at baseline and after acetazolamide (AZM) challenge to evaluate for vascular reserve and steal within the...

  • Article
  • Open Access
17 Citations
8,570 Views
22 Pages

28 February 2017

Canopy density measures such as the Leaf Area Index (LAI) have become standardized mapping products derived from airborne and terrestrial Light Detection And Ranging (aLiDAR and tLiDAR, respectively) data. A specific application of LiDAR point clouds...

  • Article
  • Open Access
15 Citations
9,903 Views
19 Pages

A Low-Rate Video Approach to Hyperspectral Imaging of Dynamic Scenes

  • Charles M. Bachmann,
  • Rehman S. Eon,
  • Christopher S. Lapszynski,
  • Gregory P. Badura,
  • Anthony Vodacek,
  • Matthew J. Hoffman,
  • Donald McKeown,
  • Robert L. Kremens,
  • Michael Richardson and
  • Mark Foote
  • + 1 author

31 December 2018

The increased sensitivity of modern hyperspectral line-scanning systems has led to the development of imaging systems that can acquire each line of hyperspectral pixels at very high data rates (in the 200–400 Hz range). These data acquisition r...

  • Article
  • Open Access
748 Views
21 Pages

27 August 2025

This research investigates the interaction between a flexible thin-walled hemisphere and the surrounding wake at ReD=2×105 acting as a simplified model of a flexible surface protuberance immersed within a turbulent boundary layer (BL). A flexib...

  • Article
  • Open Access
7 Citations
5,375 Views
17 Pages

Moderate Disturbance Has Similar Effects on Production Regardless of Site Quality and Composition

  • Benjamin T. Sagara,
  • Robert T. Fahey,
  • Christoph S. Vogel,
  • Alexander T. Fotis,
  • Peter S. Curtis and
  • Christopher M. Gough

30 January 2018

Moderate severity disturbances, which only kill a subset of canopy trees (e.g., via insects, pathogens, and windthrow), are increasingly widespread in North America, and can alter forest structure and production. Whether the net primary production (N...

  • Article
  • Open Access
6 Citations
6,823 Views
25 Pages

Radiation Limits the Yield Potential of Main Crops Under Selected Agrivoltaic Designs—A Case Study of a New Shading Simulation Method

  • Sabina Thaler,
  • Karl Berger,
  • Josef Eitzinger,
  • Abdollahi Mahnaz,
  • Vitore Shala-Mayrhofer,
  • Shokufeh Zamini and
  • Philipp Weihs

25 October 2024

Agrivoltaics (APVs) represent a growing technology in Europe that enables the co-location of energy and food production in the same field. Photosynthesis requires photosynthetic active radiation, which is reduced by the shadows cast on crops by APV p...

  • Article
  • Open Access
27 Citations
12,584 Views
18 Pages

Validating and Linking the GIMMS Leaf Area Index (LAI3g) with Environmental Controls in Tropical Africa

  • Marion Pfeifer,
  • Veronique Lefebvre,
  • Alemu Gonsamo,
  • Petri K. E. Pellikka,
  • Rob Marchant,
  • Dereje Denu and
  • Philip J. Platts

4 March 2014

The recent Global Inventory Modeling and Mapping Studies (GIMMS) LAI3g product provides a 30-year global times-series of remotely sensed leaf area index (LAI), an essential variable in models of ecosystem process and productivity. In this study, we u...

  • Article
  • Open Access
5 Citations
3,254 Views
11 Pages

Full-Field Super-Resolution Terahertz Imaging Based on Rotating Coherent Scattering Microscopy

  • Duoxuan Ma,
  • Jie Zhao,
  • Dayong Wang,
  • Hao Lin,
  • Lu Rong,
  • Yunxin Wang and
  • Shufeng Lin

11 January 2023

For decades, terahertz (THz) microscopic imaging has been limited by the resolution of the system due to the larger wavelength, the power of the source, and the equivalent noise power of the detector, so a lot of research has focused on single-point...

  • Article
  • Open Access
2 Citations
3,035 Views
13 Pages

Brain Tissue Evaluation Based on Skeleton Shape and Similarity Analysis between Hemispheres

  • Lenuta Pana,
  • Simona Moldovanu,
  • Nilanjan Dey,
  • Amira S. Ashour and
  • Luminita Moraru

Background: The purpose of this article is to provide a new evaluation tool based on skeleton maps to assess the tumoral and non-tumoral regions of the 2D MRI in PD-weighted (proton density) and T2w (T2-weighted type) brain images. Methods: The propo...

  • Article
  • Open Access
4 Citations
3,832 Views
17 Pages

All-Sky Imager Observations of the Latitudinal Extent and Zonal Motion of Magnetically Conjugate 630.0 nm Airglow Depletions

  • Carlos Martinis,
  • Dustin Hickey,
  • Joei Wroten,
  • Jeffrey Baumgardner,
  • Rebecca Macinnis,
  • Caity Sullivan and
  • Santiago Padilla

16 June 2020

630.0 nm all-sky imaging data are used to detect airglow depletions associated with equatorial spread F. Pairs of imagers located at geomagnetically conjugate locations in the American sector at low and mid-latitudes provide information on the occurr...

  • Article
  • Open Access
4 Citations
2,365 Views
13 Pages

BOLD Cerebrovascular Reactivity and NOVA Quantitative MR Angiography in Adult Patients with Moyamoya Vasculopathy Undergoing Cerebral Bypass Surgery

  • Loris Garbani Nerini,
  • Jacopo Bellomo,
  • Lara Maria Höbner,
  • Vittorio Stumpo,
  • Elisa Colombo,
  • Christiaan Hendrik Bas van Niftrik,
  • Tilman Schubert,
  • Zsolt Kulcsár,
  • Susanne Wegener and
  • Giuseppe Esposito
  • + 4 authors

Revascularization surgery for the symptomatic hemisphere with hemodynamic impairment is effective for Moyamoya vasculopathy patients. However, careful patient selection is crucial and ideally supported by advanced quantitative hemodynamic imaging. Re...

  • Article
  • Open Access
34 Citations
4,349 Views
17 Pages

Development of a Stationary 3D Photoacoustic Imaging System Using Sparse Single-Element Transducers: Phantom Study

  • Karl Kratkiewicz,
  • Rayyan Manwar,
  • Mohsin Zafar,
  • Seyed Mohsen Ranjbaran,
  • Moein Mozaffarzadeh,
  • Nico de Jong,
  • Kailai Ji and
  • Kamran Avanaki

24 October 2019

Photoacoustic imaging (PAI) is an emerging label-free and non-invasive modality for imaging biological tissues. PAI has been implemented in different configurations, one of which is photoacoustic computed tomography (PACT) with a potential wide range...

  • Article
  • Open Access
10 Citations
5,514 Views
11 Pages

Brain Functional Connectivity Asymmetry: Left Hemisphere Is More Modular

  • Lucia Jajcay,
  • David Tomeček,
  • Jiří Horáček,
  • Filip Španiel and
  • Jaroslav Hlinka

18 April 2022

Graph-theoretical approaches are increasingly used to study the brain and may enhance our understanding of its asymmetries. In this paper, we hypothesize that the structure of the left hemisphere is, on average, more modular. To this end, we analyzed...

  • Feature Paper
  • Review
  • Open Access
1 Citations
2,358 Views
24 Pages

10 July 2025

Perovskite bionic eyes have emerged as highly promising candidates for photodetection applications to their wide-angle imaging capabilities, high external quantum efficiency(EQE), and low-cost fabrication and integration. Since their initial explorat...

  • Article
  • Open Access
53 Citations
7,709 Views
22 Pages

Tracking Snow Variations in the Northern Hemisphere Using Multi-Source Remote Sensing Data (2000–2015)

  • Yunlong Wang,
  • Xiaodong Huang,
  • Hui Liang,
  • Yanhua Sun,
  • Qisheng Feng and
  • Tiangang Liang

18 January 2018

Multi-source remote sensing data were used to generate 500-m resolution cloud-free daily snow cover images for the Northern Hemisphere. Simultaneously, the spatial and temporal dynamic variations of snow in the Northern Hemisphere were evaluated from...

  • Article
  • Open Access
4 Citations
2,017 Views
7 Pages

10 January 2022

This study investigated the changes in the structural connectivity of the bilateral hemispheres over time following a middle cerebral artery infarction. Eighteen patients in the subacute group and nine patients in the chronic group with mild upper ex...

  • Article
  • Open Access
1 Citations
2,297 Views
13 Pages

Grey Matter Reshaping of Language-Related Regions Depends on Tumor Lateralization

  • Lucía Manso-Ortega,
  • Laura De Frutos-Sagastuy,
  • Sandra Gisbert-Muñoz,
  • Noriko Salamon,
  • Joe Qiao,
  • Patricia Walshaw,
  • Ileana Quiñones and
  • Monika M. Połczyńska

28 July 2023

A brain tumor in the left hemisphere can decrease language laterality as assessed through fMRI. However, it remains unclear whether or not this decreased language laterality is associated with a structural reshaping of the grey matter, particularly w...

  • Article
  • Open Access
1 Citations
2,457 Views
12 Pages

Cerebral small vessel disease (CSVD) commonly coexists with intracranial atherosclerotic stenosis (ICAS). Previous studies have tried to evaluate the relationship between ICAS and CSVD; however, they have yielded varied conclusions. Furthermore, the...

  • Article
  • Open Access
11 Citations
7,275 Views
13 Pages

Effects of Emotional Valence on Hemispheric Asymmetries in Response Inhibition

  • Sebastian Ocklenburg,
  • Jutta Peterburs,
  • Janet Mertzen,
  • Judith Schmitz,
  • Onur Güntürkün and
  • Gina M. Grimshaw

5 August 2017

Hemispheric asymmetries are a major organizational principle in human emotion processing, but their interaction with prefrontal control processes is not well understood. To this end, we determined whether hemispheric differences in response inhibitio...

  • Article
  • Open Access
5 Citations
3,739 Views
13 Pages

Gender Differences in Prefrontal Cortex Response to Negative Emotional Stimuli in Drivers

  • Ferran Balada,
  • Anton Aluja,
  • Óscar García,
  • Neus Aymamí and
  • Luis F. García

30 August 2024

Background: Road safety improvement is a governmental priority due to driver-caused accidents. Driving style variation affects safety, with emotional regulation being pivotal. However, functional near-infrared spectroscopy (fNIRS) studies show incons...

  • Review
  • Open Access
7 Citations
6,650 Views
15 Pages

The Neurological Asymmetry of Self-Face Recognition

  • Aleksandra Janowska,
  • Brianna Balugas,
  • Matthew Pardillo,
  • Victoria Mistretta,
  • Katherine Chavarria,
  • Janet Brenya,
  • Taylor Shelansky,
  • Vanessa Martinez,
  • Kitty Pagano and
  • Julian Paul Keenan
  • + 4 authors

25 June 2021

While the desire to uncover the neural correlates of consciousness has taken numerous directions, self-face recognition has been a constant in attempts to isolate aspects of self-awareness. The neuroimaging revolution of the 1990s brought about syste...

  • Article
  • Open Access
800 Views
7 Pages

2 October 2025

Background: Larger brains are believed to rely more heavily on intra-hemispheric than inter-hemispheric processing, which may lead to a proportionally reduced callosal size. Methods: To test this hypothesis, we used T1-weighted magnetic resonance ima...

  • Article
  • Open Access
3 Citations
1,789 Views
20 Pages

Attenuation of the BOLD fMRI Signal and Changes in Functional Connectivity Affecting the Whole Brain in Presence of Brain Metastasis

  • Pia Angstwurm,
  • Katharina Hense,
  • Katharina Rosengarth,
  • Quirin Strotzer,
  • Nils Ole Schmidt,
  • Elisabeth Bumes,
  • Peter Hau,
  • Tobias Pukrop and
  • Christina Wendl

25 May 2024

To date, there are almost no investigations addressing functional connectivity (FC) in patients with brain metastases (BM). In this retrospective study, we investigate the influence of BM on hemodynamic brain signals derived from functional magnetic...

  • Article
  • Open Access
2 Citations
458 Views
9 Pages

Prevalent Distribution of Conscious Processes on Either Side of the Brain

  • Sohail Adnan,
  • Mubasher Shah,
  • Muhammad Fateen Rashed and
  • Sadaf Nawab

25 October 2023

Objectives. The brain has an intrinsic tendency for the lateralization of its functions. For instance, the left hemisphere assists in the comprehension and motor expression of language. What remains uncertain is whether conscious processes are also m...

  • Article
  • Open Access
1 Citations
3,788 Views
14 Pages

Brodmann Areas, V1 Atlas and Cognitive Impairment: Assessing Cortical Thickness for Cognitive Impairment Diagnostics

  • Maksims Trišins,
  • Nauris Zdanovskis,
  • Ardis Platkājis,
  • Kristīne Šneidere,
  • Andrejs Kostiks,
  • Guntis Karelis and
  • Ainārs Stepens

31 March 2024

Background and Objectives: Magnetic resonance imaging is vital for diagnosing cognitive decline. Brodmann areas (BA), distinct regions of the cerebral cortex categorized by cytoarchitectural variances, provide insights into cognitive function. This s...

  • Article
  • Open Access
1 Citations
3,119 Views
14 Pages

Effective Connectivity Analysis of Brain Activated Regions during Distracted Driving

  • Mi-Hyun Choi,
  • Jin-Ju Jung,
  • Je-Hyeop Lee,
  • Ye-Jin Kim,
  • Kyu-Beom Kim,
  • Hyung-Sik Kim,
  • Jeong-Han Yi and
  • Soon-Cheol Chung

This study aims to use functional magnetic resonance imaging (fMRI) to assess the effective connectivity between the regions of the brain activated when driving and performing a secondary task (addition task). The subjects used an MR-compatible drivi...

  • Case Report
  • Open Access
1,851 Views
11 Pages

Preservation of Bilateral Corticospinal Projections from Injured Hemisphere After Perinatal Stroke

  • Cameron P. Casey,
  • Ellen N. Sutter,
  • Alina Grimaldo,
  • Kellie M. Collins,
  • Jose Guerrero-Gonzalez,
  • Ryan M. McAdams,
  • Douglas C. Dean and
  • Bernadette T. Gillick

17 January 2025

Background: Perinatal brain injury is a leading cause of developmental disabilities, including cerebral palsy. However, further work is needed to understand early brain development in the presence of brain injury. In this case report, we examine the...

  • Article
  • Open Access
1,113 Views
23 Pages

Experimental Investigation of the Entrainment Mechanism in Circular and Lobed Hemispherical Jets

  • Saad Aldossary,
  • Mouhammad El Hassan,
  • Nikolay Bukharin,
  • Kamel Abed-Meraim and
  • Anas Sakout

6 July 2025

Better mixing in the near-field region of jets with their surrounding fluid is of high interest for several industrial applications. Passive control that involves jet geometry modifications as compared to the traditional circular design is used in th...

  • Article
  • Open Access
6 Citations
3,006 Views
13 Pages

5 August 2023

In recent years, photoacoustic (PA) imaging has rapidly grown as a non-invasive screening technique for breast cancer detection using three-dimensional (3D) hemispherical arrays due to their large field of view. However, the development of breast ima...

  • Article
  • Open Access
2 Citations
2,237 Views
12 Pages

26 December 2022

In order to enhance the imaging capabilities of the Event Horizon Telescope (EHT) and capture the first black hole movies, the next-generation EHT (ngEHT) team is building new stations. Most stations of the EHT and ngEHT project are located in the We...

  • Letter
  • Open Access
7 Citations
3,663 Views
13 Pages

10 April 2019

A problem of tracking surface shape-shifting extended target by using gray scale pixels on optical image is considered. The measurement with amplitude information (AI) is available to the proposed method. The target is regarded as a convex hemispheri...

  • Review
  • Open Access
3 Citations
2,349 Views
40 Pages

2 January 2025

Thermal comfort studies are paramount in enhancing future urban living conditions, and hemispherical photography has emerged as a widely employed field measurement technique in outdoor thermal comfort research. This comprehensive review systematicall...

  • Article
  • Open Access
1 Citations
4,018 Views
11 Pages

Transcranial Direct Current Stimulation over the Right Inferior Parietal Cortex Reduces Transposition Errors in a Syllabic Reordering Task

  • Vanessa Costa,
  • Giuseppe Giglia,
  • Simona Talamanca,
  • Chiara Finocchiaro,
  • Giuseppe Cosentino,
  • Brigida Fierro and
  • Filippo Brighina

3 November 2021

Evidence derived from functional imaging and brain-lesion studies has shown a strong left lateralization for language, and a complementary right hemisphere dominance for visuospatial abilities. Nevertheless, the symmetrical functional division of the...

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