Related Experiment Video
Updated: Feb 24, 2026
10:50
Functional Imaging of Auditory Cortex in Adult Cats using High-field fMRI
Published on: February 19, 2014
12.0K
Organization of spatial frequency in cat striate cortex.
Jingjing Zhang1, Xian Zhang1, Xu Hu1
1CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, PR China.
Neuroscience
|August 22, 2017
Summary
Researchers mapped spatial frequency (SF) organization in cat visual cortex, revealing a global asymmetrical distribution with highest SF preference near the horizontal meridian. This enhances understanding of visual processing maps.
Area of Science:
- Neuroscience
- Visual Neuroscience
- Cortical Mapping
Background:
- The primary visual cortex (V1) processes visual information, featuring functional maps selective for visual features like spatial frequency (SF).
- While local SF map organization in cat area 17 (A17) is known, its global arrangement remains unclear.
Purpose of the Study:
- To investigate the global organization of spatial frequency (SF) maps within the primary visual cortex (area 17) of cats.
- To clarify the overall arrangement and distribution patterns of SF selectivity in A17.
Main Methods:
- Utilized intrinsic signal optical imaging to observe functional activity across the cortical surface.
- Employed extracellular electrophysiological recording to precisely measure neuronal SF preferences.
Main Results:
- Demonstrated a global asymmetrical unimodal distribution of SF organization in cat A17.
- Identified the highest SF preference concentrated around the horizontal meridian within the overall distribution.
Conclusions:
- The global arrangement of SF maps in cat A17 is not uniform but exhibits a specific asymmetrical pattern.
- Findings provide crucial insights into the large-scale organization of visual feature processing in the primary visual cortex.
More Related Videos
11:24Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging
Published on: December 12, 2012
14.1K
09:55Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex
Published on: September 5, 2018
8.9K
Related Concept Videos
01:21Association Areas of the Cortex
9.8K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
9.8K
01:14Motor and Sensory Areas of the Cortex
8.2K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
8.2K
01:20Anatomy of the Eyeball
10.1K
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...
10.1K
01:24Vision
60.6K
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.
60.6K
01:23Somatosensory, Motor, and Association Cortex
3.0K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
3.0K
01:26Visual System
2.1K
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...
Once through the pupil, the light passes through the lens, a...
2.1K