Unit 4- the brain pt 3 Flashcards

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1
Q

Nucleus

A

a bundle of cells that work together.

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2
Q

pituitary dwarfism

A

a condition in which a person grows very slowly and as an adult typically shorter than an average adult.

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3
Q

reflex arc

A

reflexes occur when a signal is sent from a sensory organ to the spinal cord. It then processes that information instead of passing it onto the brain.

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4
Q

“split brain”

A

When the two hemispheres can’t communicate. Both hemispheres act without knowledge of the other.

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5
Q

ablation

A

is the process of removing or destroying some brain tissue leaving lesions or tissue damaged from the surgery behind.

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6
Q

autopsy

A

a postmortem examination to determine the cause of death- offers another tool for brain study.

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7
Q

computerized axial tomography
(CT or CAT scan)

A

involves taking 2D photos to look at organs and other body parts

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8
Q

deep brain stimulation

A

a less invasive method of altering the brain to eliminate behavior symptoms.

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9
Q

electroencephalogram
(EEG)

A

attach electrodes to a person’s scalp to record the brain waves.

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10
Q

Functional Magnetic Resonance Imaging
(fMRI)

A

uses magnetic Resonance Imaging to see blood flow and oxygen metabolism to infer brain activity .

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11
Q

Hemispherectomy

A

removing the diseased part of the brain

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12
Q

lesions/ lesioning

A

damaging certain parts of the brain and nothing changes in behavior.

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13
Q

MRI

A

is an imaging technique that is used to see internal organs. Unlike X-rays, this shows detailed images of the body. It shows damage to ligaments and cartilage after a sport injury, such as a severely twisted ankle or knee.

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14
Q

Positron Emission Tomography(PET Scan)

A

allows researchers to examine slices of deep brain structures that had previously been seen during surgery. During the PET scan scientist inject a radioactive “tracker” molecule into the bloodstream to measure the amount of energy the brain uses during particular activities,

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15
Q

Roger Sperry and Micheal Gazzaniga

A

Showed that visual information got stuck in one hemisphere

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16
Q

x-rays

A

generally show solid structures inside the body such as bones.

17
Q

Transcranial Magnetic Stimulation
(TMS)

A

magnetic fields of how the brain processes emotions.

18
Q

Paul Broca

A

studied patients who lost the ability to speak.

19
Q

Carl Wernicke

A

studied patients who lost the ability to understand language.

20
Q

prefrontal lobotomy

A

uses ablation to control behavior.