The primary sensory areas (
visual, auditory, somatic sensory and gustatory areas
) receive information from peripheral receptors with only a few synapses interposed. The primary visual cortex is located at the caudal pole of the occipital lobe, mainly on its medial region.
What are the 5 sensory areas?
The primary sensory areas are the primary cortical regions of the five sensory systems in the brain (
taste, olfaction, touch, hearing and vision
).
What is the sensory cortex of the brain?
The
sensory cortex
is defined as all
cortical
areas linked with
sensory
functions(1). In another definition, the
sensory cortex
is a section of the
cerebral cortex
which is responsible for receiving and interpreting
sensory
information from different parts of the body.
What are the parts of the sensory cortex?
The cortex is commonly described as composed of three parts:
sensory, motor, and association areas
. Parts of the cortex that receive sensory inputs from the thalamus are called primary sensory areas. Each of the five senses relates to specific groups of brain cells that categorize and integrate sensory information.
What is processed in the sensory areas of the cerebral cortex?
The cerebral cortex contains: Sensory areas: receive
input from the thalamus and process information related to the senses
. They include the visual cortex of the occipital lobe, the auditory cortex of the temporal lobe, the gustatory cortex, and the somatosensory cortex of the parietal lobe.
What are the 4 motor areas of the cerebral cortex?
These areas are the primary motor cortex (Brodmann’s area 4),
the premotor cortex, and the supplementary motor area
(Figure 3.1).
What are the 3 functional areas of the cerebral cortex?
As a means of simplification, the cerebral cortex is often characterized as being made up of three types of areas:
sensory, motor, and association areas
.
What part of the brain is responsible for the 5 senses?
The parietal lobe
gives you a sense of ‘me’. It figures out the messages you receive from the five senses of sight, touch, smell, hearing and taste. This part of the brain tells you what is part of the body and what is part of the outside world.
What is the purpose of the sensory areas of the cerebral cortex?
Sensory areas of the brain
receive and process sensory information
, including sight, touch, taste, smell, and hearing.
What part of the brain receives sensory input?
Thalamus
: The thalamus is the relay center of the brain. It receives afferent impulses from sensory receptors located throughout the body and processes the information for distribution to the appropriate cortical area. It is also responsible for regulating consciousness and sleep.
What makes the primary sensory cortex unique?
The primary somatosensory cortex is
responsible for processing somatic sensations
. These sensations arise from receptors positioned throughout the body that are responsible for detecting touch, proprioception (i.e. the position of the body in space), nociception (i.e. pain), and temperature.
What separates the motor and sensory cortex?
The major motor and sensory areas are separated by
the central sulcus
and the immediate areas anterior (precentral gyrus) and posterior (postcentral gyrus), forming, respectively, the primary motor and sensory cortices.
What sense does the sensory cortex control?
The sensory cortex is involved in
somatic sensation, visual stimuli
, and movement planning.
What are the 6 layers of the cerebral cortex?
Showing six layers of cerebral cortex of control group;
molecular layer (I), outer granular layer (II), outer pyramidal layer (III), inner granular layer (IV), inner pyramidal layer (V) and polymorphic layer (VI)
.
Where is the primary sensory cortex located?
The somatic sensory cortex in humans, which is located in
the parietal lobe
, comprises four distinct regions, or fields, known as Brodmann’s areas 3a, 3b, 1, and 2. Although area 3b is generally known as the primary somatic sensory cortex (also called SI), all four areas are involved in processing tactile information.
What is the difference between neocortex and cerebral cortex?
Neocortex refers to a part of the
cerebral cortex concerned with sight and hearing in
mammals, regarded as the most recently evolved part of the cortex while cerebral cortex refers to the outer layer of the cerebrum composed of folded grey matter and playing an important role in consciousness.
