Video Experimental Relacionado
Updated: Aug 15, 2026
10:27
Training Synesthetic Letter-color Associations by Reading in Color
Published on: February 20, 2014
El centro de color en la corteza cerebral del hombre
C J Lueck1, S Zeki, K J Friston
1MRC Cyclotron Unit, Hammersmith Hospital, London, UK.
Nature
|August 3, 1989
Resumen
Los investigadores identificaron una región específica del cerebro para la visión del color en humanos utilizando tomografía por emisión de positrones (PET). Este estudio confirma un centro de color humano especializado, similar a los hallazgos en los monos macacos.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- La percepción visual es la percepción visual.
- Neurociencia cognitiva y neurociencia cognitiva.
Sus antecedentes:
- Los estudios identificaron un área de procesamiento de color (área V4) en los cerebros de monos macacos.
- La evidencia humana temprana de un centro de color no fue concluyente debido a los defectos visuales asociados.
- La reinvestigación de un centro de color humano fue impulsada por la especialización funcional en la corteza visual del macaco.
Objetivo del estudio:
- Investigar la existencia y ubicación de un centro especializado de procesamiento de color en el cerebro humano normal.
- Utilizar técnicas avanzadas de neuroimagen para identificar regiones cerebrales activadas por estímulos de color.
Principales métodos:
- Se emplearon escáneres de tomografía por emisión de positrones (PET) para medir el flujo sanguíneo cerebral.
- Las exploraciones PET monitorearon la actividad cerebral en sujetos que vieron pantallas visuales multicolores versus negras y blancas.
Principales resultados:
- Una región específica en la corteza cerebral humana normal mostró una mayor actividad al ver pantallas multicolores en comparación con las pantallas en blanco y negro.
- Esta región identificada está especializada en el procesamiento de la visión en color.
Conclusiones:
- El estudio proporciona evidencia de un área cortical humana distinta especializada en la visión del color.
- Las técnicas de neuroimagen como el PET pueden localizar eficazmente la especialización funcional en el cerebro humano.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:26Cerebrum: Anatomical Overview I
The main and largest component of the human brain is the cerebrum. The cerebrum consists of two main parts: the cerebral cortex, an outer layer with wrinkles or folds known as gyri and shallow grooves called sulci, and a deeper region beneath it. The cerebrum divides into two distinct hemispheres and contains five different lobes: the frontal, parietal, temporal, occipital, and insula. The central sulcus separates the frontal and parietal lobes and two functionally important gyri — the...
01:11Cerebrum: Anatomical Overview II
Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
01:14Motor and Sensory Areas of the Cortex
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.
01:05Cerebral Hemispheres
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
01:22Lobes of the Cerebrum
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements.
01:23Somatosensory, Motor, and Association Cortex
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 the...