作者mulkcs (mulkcs)
看板Cognitive
標題[認知] 人物介紹-Pierre Paul Broca Biography (1824-1880)
時間Fri Mar 27 19:39:51 2009
http://www.faqs.org/health/bios/52/Pierre-Paul-Broca.html
Nationality
French
Gender
Male
Occupation
anthropologist, anatomist
Pierre Paul Broca, the son of a Huguenot doctor, was born near Bordeaux,
France, in 1824. After studying mathematics and physical science at the local
university, he entered medical school at the University of Paris in 1841. He
received his M.D. in 1849. Though trained as a pathologist, anatomist, and
surgeon, Broca's interests were not limited to the medical profession. His
versatility and tireless dedication to science permitted him to make
significant contributions to other fields, most notably to anthropology.
The application of his expertise in anatomy outside the field of medicine
began in 1847 as a member of a commission charged with reporting on
archaeological excavations of a cemetery. The project permitted Broca to
combine his anatomical and mathematical skills with his interests in
anthropology.
The discovery in 1856 of Neanderthal Man once again drew Broca into
anthropology. Controversy surrounded the interpretation of Neanderthal. It
was clearlya human skull, but more primitive and apelike than a modern skull
and the soil stratum in which it was found indicated a very early date.
Neanderthal's implications for evolutionary theory demanded thorough
examination of the evidence to determine decisively whether it was simply a
congenitally deformed Homo sapiens or a primitive human form. Both as an
early supporter of Charles Darwin and as an expert in human anatomy, Broca
supported the latter view. Broca's view eventually prevailed, though not
until the discovery of themuch more primitive Java Man (then known as
Pithecanthropus, but laterHomo erectus).
Broca is best known for his role in the discovery of specialized functions
indifferent areas of the brain. In 1861, he was able to show, using
post-mortem analysis of patients who had lost the ability to speak, that such
loss was associated with damage to a specific area of the brain. The area,
located toward the front of the brain's left hemisphere, became known as
Broca's convolution. Aside from its importance to the understanding of human
physiology, Broca's findings addressed questions concerning the evolution of
language.
All animals living in groups communicate with one another. Non-human
primates have the most complex communication system other than human language.
They use a wide range of gestures, facial expressions, postures, and
vocalizations,but are limited in the variety of expressions and are unable to
generate new signals under changing circumstances. Humans alone possess the
capacity for language rather than relying on a body language vocabulary.
Language permits humans to generate an infinite number of messages and
ultimately allows the transmission of information--the learned and shared
patterns of behavior characteristic of human social groups, which
anthropologists call culture--from generation to generation. The development
of language spurred human evolution by permitting new ways of social
interaction, organization, and thought.
Given the importance assigned to human speech in human evolution,
scientists began to look for the physical preconditions of speech. The fact
that apes have the minimal parts necessary for speech indicated that the
shape and arrangement of the vocal apparatus was insufficient for the
development of speech.The vocalizations produced by other animals are
involuntary and incapable of conscious alteration. However, human speech
requires codifying thought and transmitting it in patterned strings of sound.
The area of the brain isolated by Broca sends the code to another part of the
brain that controls the musclesof the face, jaw, tongue, palate, and larynx,
setting the speech apparatus in motion. This area and a companion area that
controls the understanding of language, known as Wernicke's area, are
detectable in early fossil skulls of the genus Homo. The brain of Homo was
evolving toward the use of language, although the vocal chamber was still
inadequate to articulate speech. Broca discovered one piece in the puzzle of
human communication and speech, which permits the transmission of culture.
Equally important, Broca contributed to the development of physical
anthropology, one of the four subfields of anthropology. Craniology, the
scientific measurement of the skull, was a major focus of physical
anthropology during this period. Mistakenly considering contemporary human
groups as if they were living fossils, anthropologists became interested in
the nature of human variability and attempted to explain the varying levels
of technological development observed worldwide by looking for a
correspondence between cultural level and physical characteristics. Broca
furthered these studies by inventing at least twenty-seven instruments for
making measurements of the human body, and by developing standardized
techniques of measurement.
Broca's many contributions to anthropology helped to establish its firm
scientific foundation at a time when the study of nature was considered a
somewhat sinister science.
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.109.113.184
※ 編輯: mulkcs 來自: 61.228.242.101 (03/28 20:19)
1F:→ mulkcs:這篇從人類學得觀點切入 我感覺說得蠻生動的 03/28 20:20