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相关概念视频

Sperm Transport01:15

Sperm Transport

1.4K
The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
The maturation phase occurs in the epididymis, where sperm...
1.4K
Sperm Structure and Semen Composition01:22

Sperm Structure and Semen Composition

5.1K
During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
5.1K
Cell Motility through Blebbing01:16

Cell Motility through Blebbing

2.0K
Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
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Spermatogenesis01:41

Spermatogenesis

103.4K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
103.4K
Microtubules in Cell Motility01:24

Microtubules in Cell Motility

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Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
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相关实验视频

Updated: Sep 13, 2025

Fish Sperm Assessment Using Software and Cooling Devices
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Fish Sperm Assessment Using Software and Cooling Devices

Published on: July 28, 2018

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一个高效的先进的YOLOv8框架用于检测精子运动.

Chuanjiang Li1, Wenjing Xia1, Ang Li2

  • 1The College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, No. 100 Guilin Road, 200234, Shanghai, China.

Journal of assisted reproduction and genetics
|July 28, 2025
PubMed
概括

这项研究介绍了YOLOv8-STA,这是一个增强的YOLOv8模型,用于准确检测精子运动. 新模型显著提高了检测准确度,这对于生殖健康研究至关重要.

关键词:
深度学习是一种深度学习.男人生育能力 男人生育能力小物体检测 小物体检测检测精子运动性的检测.

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Measuring Sperm Guidance and Motility within the Caenorhabditis elegans Hermaphrodite Reproductive Tract
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Measuring Sperm Guidance and Motility within the Caenorhabditis elegans Hermaphrodite Reproductive Tract

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Fluorimetric Techniques for the Assessment of Sperm Membranes
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Fluorimetric Techniques for the Assessment of Sperm Membranes

Published on: November 28, 2018

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相关实验视频

Last Updated: Sep 13, 2025

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Measuring Sperm Guidance and Motility within the Caenorhabditis elegans Hermaphrodite Reproductive Tract
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Measuring Sperm Guidance and Motility within the Caenorhabditis elegans Hermaphrodite Reproductive Tract

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Fluorimetric Techniques for the Assessment of Sperm Membranes
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Fluorimetric Techniques for the Assessment of Sperm Membranes

Published on: November 28, 2018

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科学领域:

  • 计算机视觉 计算机视觉
  • 生物医学成像技术 生物医学成像技术
  • 生殖健康 生殖健康

背景情况:

  • 检测精子运动性对于生殖健康研究至关重要.
  • 传统的方法与精子的小尺寸,快速运动和复杂的背景作斗争.

研究的目的:

  • 开发一种先进的精子检测模型,以提高准确度.
  • 为了克服精子分析中传统图像处理的局限性.

主要方法:

  • 拟议的YOLOv8-STA模型集成SPD_Conv用于细粒度特征提取.
  • 用C2F-Triplet模块取代C2F模块,以增强特征关系和注意力机制.
  • 引入了104x104像素的小物体检测头,用于高级功能地图.

主要成果:

  • 通过YOLOv8-STA模型,mAP@0.5.5的增长率达到了4.2%.
  • 与基线YOLOv8.8相比,mAP@0.5:0.95增加了5.4%.
  • 在公共EVISAN数据集上验证.

结论:

  • 提出的YOLOv8-STA方法在检测精子运动方面是有效和优越的.
  • 该模型提高了分析精子运动的准确性,这对人类发展研究至关重要.