How The Brain Processes Sensory Information | 7 Incredible Brain Mechanisms

How does the brain process information?
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In this video, we’re going to examine 7 incredible brain mechanisms for processing sensory information.
When light hits the retina of the eye photoreceptors, a special type of cell converts these light signals into electric signals. The optic nerve carries these signals to your brain.

The visual cortex located in the occipital lobe in the back of the brain then creates a visual image of what you’re looking at.

The skin is home to countless touch receptors. All of these receptors work together to signal to your brain what you are touching at any particular moment and whether or not it’s safe.

These signals travel up the sensory nerves to your spinal cord. From there, they are received by the thalamus portion of the brain which then relays this information to the cerebral cortex.

This information is then processed within the sensory cortex.

The brain controls movement within the frontal lobe. The process ends with the primary motor cortex which sends the information down the spinal cord and to the muscles and this is where your muscles contract and your body moves.

From the receptors in your nose, the information travels to the olfactory cortex in the brain. Scientists have even created spatial maps of this area of the brain indicating where it detects “good”, “bad”, “strong”, and “mild” odors.

While your tastebuds detect whether something is sweet, salty, bitter, sour, or savory, smell and taste combined give way to individual flavors.

This taste information is all processed within the primary gustatory cortex. The smell from the olfactory cortex and taste combine in the brain which gives way to the flavors you experience in the food you eat.

This process starts with auditory stimuli entering the ear canal. This causes the eardrum to move, which is why eardrum damage can be so detrimental to a person’s ability to hear.

These vibrations travel through the ossicles to the cochlea, where it then moves the fluid located in this area. This then causes the hair cells located in this area to move. The auditory nerve, then, takes these signals and relays them to the brain.

The auditory cortex in the temporal lobe processes this information, providing you with sound or helping you understand what another person is saying to you.

This system works with the visual systems in your brain to ensure you maintain balance and perform movements correctly and accurately. The structures and fluid of the inner ear sense and respond to movement and gravitational changes.

These signals are sent to the brain where they are processed with visual information in the cerebellum.