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Books > Science & Mathematics > Biology, life sciences > Life sciences: general issues
It is well known that the class of steroid hormones known as
estrogens have powerful effects on organs related to reproduction
such as the uterus and the breast. What is less well known is that
estrogens also profoundly modulate brain function and behavior.
Estrogens, such as estradiol, can occur in brain as the result of
ovarian secretion of the hormone into the blood that then finds its
way to the brain. In male vertebrates, the testes secrete
androgens, such as testosterone, into the blood and this class of
steroid hormones can be converted into estrogens in the brain via
the action of the enzyme aromatase which is expressed in the male
brain in many species. Finally estradiol can be synthesized de novo
from cholesterol as it has been shown in a variety of species that
all the enzymes required to synthesize estrogens are expressed in
the brain. This book collects chapters by experts in the field that
considers, how estradiol is synthesized in the brain and what its
effects are on a variety of behaviors. Special attention is paid to
the enzyme aromatase that is distributed in discrete regions of the
brain and is highly regulated in a sex specific and seasonal
specific manner. Recently it has become clear that estrogens can
act in the brain at two very different time scales, one is rather
long lasting (days to weeks) and involves the modulation of gene
transcription by the hormone-receptor complex. A second mode of
action is much quicker and involves the action of estrogens on cell
membranes that can result in effects on second messenger systems
and ultimately behavior within minutes. Thus this book highlights
novel views of estrogen action that are still under-appreciated
namely that estrogens have significant effects on the male brain
and that they can act on two very different times scales. This
volume will be of interest to both basic researchers and clinicians
interested in the action of estrogens.
The Art of 2D Transesophageal Echocardiography provides in a
practical and systematic way an overview of basic concepts and
state of-the-art techniques in transesophageal echocardiography. It
summarizes established application, provides hundreds of real-time
videos of various cardiac diseases that expand the knowledge of
every cardiologist, intensivist, and cardiovascular physicians in
their daily practice of transesophageal echocardiography.
A key to being confident in the evaluation of skeletal trauma
imaging is to rely on the identification of mechanism-specific
traumatic features. Indeed, for each mechanism of injury applied to
a particular part of the skeleton, the latter can only present
predefined traumatic injuries: this is a pattern of injuries. The
recognition of such a pattern of imaging allows the reader to
determine the injuring mechanism and look for damages of lesser
expression (or even invisible damages) that are common to the
identified mechanism. In becoming more familiar with those
mechanisms, the readers can deal with trauma imaging more
efficiently and directly focus on findings relevant for further
management. Skeletal Trauma: A Mechanism-Based Approach of Imaging
aims to combine the knowledge of both radiologists and surgeons to
propose a mechanism-based approach to imaging in skeletal trauma.
Along 15 chapters covering every part of the skeleton, with more
than 900 figures, this book reviews the anatomy, standard
radiologic views, and imaging findings of skeletal trauma. Over 200
original schemas invite the reader to understand the imaging
features and determine the injuring mechanism.
This timely and up to date new edition of Biomedicine and Beatitude
features an entirely new chapter on the ethics of bodily
modification. It is also updated throughout to reflect the
pontificate of Pope Francis, recent concerns including ethical
issues raised by the COVID-19 pandemic, and feedback from the many
instructors who used the first edition in the classroom
This book is about pleasure. It's also about pain. Most important, it's about how to find the delicate balance between the two, and why now more than ever finding balance is essential.
We're living in a time of unprecedented access to high-reward, high-dopamine stimuli: drugs, food, news, gambling, shopping, gaming, texting, sexting, Facebooking, Instagramming, YouTubing, tweeting... The increased numbers, variety, and potency is staggering. The smartphone is the modern-day hypodermic needle, delivering digital dopamine 24/7 for a wired generation. As such we've all become vulnerable to compulsive overconsumption.
In Dopamine Nation, Dr. Anna Lembke, psychiatrist and author, explores the exciting new scientific discoveries that explain why the relentless pursuit of pleasure leads to pain...and what to do about it. Condensing complex neuroscience into easy-to-understand metaphors, Lembke illustrates how finding contentment and connectedness means keeping dopamine in check. The lived experiences of her patients are the gripping fabric of her narrative. Their riveting stories of suffering and redemption give us all hope for managing our consumption and transforming our lives. In essence, Dopamine Nation shows that the secret to finding balance is combining the science of desire with the wisdom of recovery.
Largely through trial and error, filmmakers have developed engaging
techniques that capture our sensations, thoughts, and feelings.
Philosophers and film theorists have thought deeply about the
nature and impact of these techniques, yet few scientists have
delved into empirical analyses of our movie experience-or what
Arthur P. Shimamura has coined "psychocinematics." This edited
volume introduces this exciting field by bringing together film
theorists, philosophers, psychologists, and neuroscientists to
consider the viability of a scientific approach to our movie
experience.
Eye movements are a vital part of our interaction with the world.
They play a pivotal role in perception, cognition, and education.
Research in this field is now proceeding at a considerable pace and
casting new light on how the eyes move and what information we can
derive during the frequent and brief periods of fixation. However,
the origins of this work are less well known, even though much of
our knowledge was derived from this research with far more
primitive equipment. This book is unique in tracing the history of
eye movement research. It shows how great strides were made in this
area before modern recording devices were available, especially in
the measurement of nystagmus. When photographic techniques were
adapted to measure discontinuous eye movements, from about 1900,
many of the issues that are now basic to modern research were then
investigated. One of the earliest cognitive tasks examined was
reading, and it remains in the vanguard of contemporary research.
Modern researchers in this field will be astonished at the
subtleties of these early experimental studies and the ingenuity of
interpretations that were advanced one and even two centuries ago.
Though physicians often carried out the original eye movement
research, later on it was pursued by psychologists - it is within
contemporary neuroscience that we find these two strands reunited.
Anyone interested in the origins of psychology and neuroscience
will find much to stimulate and surprise them in this valuable new
work.
Archimedes to Hawking takes the reader on a journey across the
centuries as it explores the eponymous physical laws-from
Archimedes' Law of Buoyancy and Kepler's Laws of Planetary Motion
to Heisenberg's Uncertainty Principle and Hubble's Law of Cosmic
Expansion-whose ramifications have profoundly altered our everyday
lives and our understanding of the universe. Throughout this
fascinating book, Clifford Pickover invites us to share in the
amazing adventures of brilliant, quirky, and passionate people
after whom these laws are named. These lawgivers turn out to be a
fascinating, diverse, and sometimes eccentric group of people. Many
were extremely versatile polymaths-human dynamos with a seemingly
infinite supply of curiosity and energy and who worked in many
different areas in science. Others had non-conventional educations
and displayed their unusual talents from an early age. Some
experienced resistance to their ideas, causing significant personal
anguish. Pickover examines more than 40 great laws, providing brief
and cogent introductions to the science behind the laws as well as
engaging biographies of such scientists as Newton, Faraday, Ohm,
Curie, and Planck. Throughout, he includes fascinating,
little-known tidbits relating to the law or lawgiver, and he
provides cross-references to other laws or equations mentioned in
the book. For several entries, he includes simple numerical
examples and solved problems so that readers can have a hands-on
understanding of the application of the law. A sweeping survey of
scientific discovery as well as an intriguing portrait gallery of
some of the greatest minds in history, this superb volume will
engage everyone interested in science and the physical world or in
the dazzling creativity of these brilliant thinkers.
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