| Term | Definition |
| Paul Broca | (1824- 1880) Found that injury to a particular part of the left frontal lobe (now known as Broca's area) resulted in a kind of asphasia in which the person is unable to produce many words or to speak very fluently (p. 43) |
| Charles Darwin | (1809-1882) English naturalist, eminent collector and geologist, who proposed and provided evidence that all species of life have evolved through process of natural selection. This is the basis of modern evolutionary theory, and, in modified form, his scientific discovery remains as the foundation of biology. Author of "On The Origin Of Species" in 1859. |
| Michael Gazzaniga | psychologist in the neuroscience perspective, did experiments on left and right brain interactions |
| Roger Sperry | Who earned a nobel prize for showing that the right and left halves of the brain are specialized to handle different types of mental tasks? |
| Carl Wernicke | (1848- 1904) Found another "language center" located in the superior, posterior region of the temporal lobe (typically in the left hemisphere), where injury to this area results in the person being able to produce speech with seemingly fluent contours of pitch and rhythm, however the speech often makes no sense and contains gibberish. People suffering from Wernicke's asphasia also show impairments in their ability to understand speech (p. 44) |