Related Experiment Video

Updated: Aug 15, 2026

Techniques for Investigating the Anatomy of the Ant Visual System
08:56

Techniques for Investigating the Anatomy of the Ant Visual System

Published on: November 27, 2017

Anatomy of the visual system

W Wichmann1, W Müller-Forell

  • 1Institute of Neuroradiology and Radiology, Klinik im Park AG, Seestrasse 220, 8027, Zurich, Switzerland. werner.wichmann@hirslanden.ch

European Journal of Radiology
|February 26, 2004
PubMed

More Related Videos

Using Looming Visual Stimuli to Evaluate Mouse Vision05:07

Using Looming Visual Stimuli to Evaluate Mouse Vision

Published on: June 13, 2019

Preparation and Analysis of Histological Slides of Rat and Mouse Eyeballs to Evaluate the Retina07:01

Preparation and Analysis of Histological Slides of Rat and Mouse Eyeballs to Evaluate the Retina

Published on: August 23, 2024

Related Concept Videos

What is a Sensory System?01:31

What is a Sensory System?

Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.
The Retina01:32

The Retina

The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Anatomy of the Eyeball01:20

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Visual System01:26

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...