Examples of hemisphere in the following topics:
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- The extent of specialization by hemisphere remains under investigation.
- The structural and chemical variance of a particular brain function, between the two hemispheres of one brain or between the same hemisphere of two different brains, is still being studied.
- Although 95% of right-handed people have left-hemisphere dominance for language, 18.8% of left-handed people have right-hemisphere dominance for language function.
- Feeding is an example of a routine left-hemisphere behavior, while escape from predators is an example of a right-hemisphere behavior.
- The human brain is divided into two hemispheres–left and right.
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- The brain is divided into two hemispheres and four lobes, each of which specializes in a different function.
- The brain is divided into two halves, called hemispheres.
- However, it is easy to exaggerate the differences between the functions of the left and right hemispheres; both hemispheres are involved with most processes.
- The two hemispheres communicate with one another through the corpus callosum.
- Outline the structure and function of the lobes and hemispheres of the brain
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- The cortex is composed of two hemispheres, right and left, which are separated by a large sulcus.
- Although there are some brain functions that are localized more to one hemisphere than the other, the functions of the two hemispheres are largely redundant.
- In fact, sometimes (very rarely) an entire hemisphere is removed to treat severe epilepsy.
- In other surgeries to treat severe epilepsy, the corpus callosum is cut instead of removing an entire hemisphere.
- This causes a condition called split-brain syndrome, which gives insights into unique functions of the two hemispheres.
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- The motor areas, arranged like a pair of headphones across both cortex hemispheres, are involved in the control of voluntary movements.
- The motor areas of the brain are located in both hemispheres of the cortex.
- It is located on the midline
surface of the hemisphere anterior to the primary motor cortex.
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- The cerebrum contains the cerebral cortex (of the two cerebral hemispheres), as well as several subcortical structures, including the hippocampus, basal ganglia, and olfactory bulb.
- The cortex is composed
of two hemispheres, right and left, separated by a large
sulcus.
- A thick fiber bundle, the corpus callosum, connects the two
hemispheres, allowing information to be passed from one side to the
other.
- The right hemisphere controls and processes signals from the left side
of the body, while the left hemisphere controls and processes signals
from the right side of the body.
- Each
hemisphere of the mammalian cerebral cortex can be broken down into
four functionally and spatially defined lobes: frontal, parietal,
temporal, and occipital.
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- She explains that when the earth is closest to the sun at point X, it is winter in the northern hemisphere because the light rays from the sun hitting the earth are "indirect. " Heather says that when the earth is at point Y, it is summer because the light rays hitting the northern hemisphere are "direct. " She goes on to explain that direct rays are those that originate from the sun and travel in a straight line to the earth, and that indirect rays are rays that "bounce off" somewhere in space before reaching earth.
- She illustrates by drawing a diagram that the seasons are caused by the tilt in the earth's axis, which causes direct and indirect light to fall on the northern and southern hemispheres of the earth.
- Even a strong hint from the interviewer and a display of diagrams illustrating the differences between direct and indirect sunlight does not change Heather's mind; she incorporates the hints into her erroneous conception by saying that the indirect light from the sun, which also causes winter in the northern hemisphere, is light that bounces off some other point on the earth before reaching the northern hemisphere (Mestre, 1994).
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- 2) The child answers: Earth orbits in a curlicue pattern, so the difference in distance of the earth to the sun causes the seasons. 3) The MKO replies (Conceptual Conflict) that Earth in fact travels in a circular orbit; it is the tilt of the earth's axis that causes the seasons. 4) The child questions the intelligibility of the alternative conception (that the tilt of the earth's axis causes the seasons). 5) The MKO explains that because of the tilt, some parts of the earth will experience indirect sunlight (winter), while the areas experiencing direct sunlight will have summer. 6) After reflection, the child realizes that the alternative conception is plausible and accepts it. 7) The summary if the northern hemisphere is experiencing summer, then the southern hemisphere is experiencing the opposite season-winter.
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- The cerebral hemispheres form the
largest part of the human brain and are situated above most other brain structures.
- The left and right hemispheres of the cerebral cortex are nearly symmetrical.
- The hemispheres are connected by the corpus callosum, the largest white-matter
structure in the brain.
- Anatomists
conventionally divide each hemisphere
into four lobes: the frontal (control of specialized motor control,
learning, planning, and speech),
parietal (control of somatic sensory functions), occipital (control of
vision), and temporal lobes
(control of hearing and some speech).
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- Commissural tracts cross from one cerebral hemisphere to the other through bridges called commissures.
- Association tracts connect different regions within the same hemisphere of the brain.
- Long association fibers connect different lobes of a hemisphere to each other, whereas short association fibers connect different gyri within a single lobe.
- It connects the left and right cerebral hemispheres and facilitates interhemispheric communication.
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- The left hemisphere of the brain controls the motor functions of the right half of the body, and vice versa; the same is true of vision.
- The left hemisphere of the brain processes visual images from the right-hand side of space, or the right visual field, and the right hemisphere processes visual images from the left-hand side of space, or the left visual field.
- The optic chiasm is a complicated crossover of optic nerve fibers behind the eyes at the bottom of the brain, allowing the right eye to "wire" to the left neural hemisphere and the left eye to "wire" to the right hemisphere.