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Ultimately it’s not a numbers game but a quality game. This is true not just for the chances of having a child but having a healthy child. More immediately, fertility is a predictor of general health. While it does not appear that we are going to be extinct soon (at least not through reproductive failure), sperm quality could be a signal of wider health problems and should be investigated further.
Shaun Roman, Senior Lecturer, University of Newcastle
This article was originally published on The Conversation. Read the original article.
As for sperm supplements such as Menevit, there’s a great deal of research that still needs to be done before we can say for sure it’s a worthwhile investment.
Krissy Kendall, Lecturer of Exercise and Sports Science, Edith Cowan University
This article was originally published on The Conversation. Read the original article.
It’s vital psychotherapy acknowledges the variation in responses to trauma and the profound impact of betrayal in abusive families. Repetition of invalidation and denial should be avoided in academic debate and clinical approaches.
Louise Newman, Director of the Centre for Women’s Mental Health at the Royal Women’s Hospital and Professor of Psychiatry, University of Melbourne
This article was originally published on The Conversation. Read the original article.
Lately, some neuroscientists have been struggling with an identity crisis: what do we believe, and what do we want to achieve? Is it enough to study the brain’s machinery, or are we missing its larger design?
Scholars have pondered the mind since Aristotle, and scientists have studied the nervous system since the mid-1800s, but neuroscience as we recognize it today did not coalesce as a distinct study until the early 1960s. In the first ever Annual Review of Neuroscience, the editors recalled that in the years immediately after World War II, scientists felt a “growing appreciation that few things are more important than understanding how the nervous system controls behavior.” This “growing appreciation” brought together researchers scattered across many well-established fields – anatomy, physiology, pharmacology, psychology, medicine, behavior – and united them in the newly coined discipline of neuroscience.
It was clear to those researchers that studying the nervous system needed knowledge and techniques from many other disciplines. The Neuroscience Research Program at MIT, established in 1962, brought together scientists from multiple universities in an attempt to bridge neuroscience with biology, immunology, genetics, molecular biology, chemistry, and physics. The first ever Department of Neurobiology was established at Harvard in 1966 under the direction of six professors: a physician, two neurophysiologists, two neuroanatomists, and a biochemist. The first meeting of the Society for Neuroscience was held the next year, where scientists from diverse fields met to discuss and debate nervous systems and behavior, using any method they thought relevant or optimal.
These pioneers of neuroscience sought to understand the relationship between the nervous system and behavior. But what exactly is behavior? Does the nervous system actually control behavior? And when can we say that we are really “understanding” anything?
Behavioral questions
It may sound pedantic or philosophical to worry about definitions of “behavior,” “control,” and “understanding.” But for a field as young and diverse as neuroscience, dismissing these foundational discussions can cause a great deal of confusion, which in turn can bog down progress for years, if not decades. Unfortunately for today’s neuroscientists, we rarely talk about the assumptions that underlie our research.
“Understanding,” for instance, means different things to different people. For an engineer, to understand something is to be able to build it; for a physicist, to understand something is to be able to create a mathematical model that can predict it. By these definitions, we don’t currently “understand” the brain – and it’s unclear what kind of detective work might solve that mystery.
Many neuroscientists believe that the detective work consists of two main parts: describing in great detail the molecular bits and pieces of the brain, and causing a reliable change in behavior by changing something about those bits and pieces. From this perspective, behavior is an easily observable phenomena – one that can be used as a measurement.
But since the beginning of neuroscience, a vocal and persistent minority has argued that detective work of this kind, no matter how detailed, cannot bring us closer to “understanding” the relationship between the nervous system and behavior. The dominant, granular view of neuroscience contains several problematic assumptions about behavior, the dissenters say, in an argument most recently made earlier this year by John Krakauer, Asif Ghazanfar, Alex Gomez-Marin, Malcolm MacIver, and David Poeppel in a paper called “Neuroscience Needs Behavior: Correcting a Reductionist Bias.”
>> Read more Source: Massive
And we can explain why, on the first morning after the start of daylight savings, waking up is so much harder. But don’t worry, the beautiful mechanism in your biological clock is designed to make adjustments based on the information it gets from the external environment, and those molecules will have you resynchronised in just a couple of days.
Sally Ferguson, Research professor, CQUniversity Australia
This article was originally published on The Conversation. Read the original article.
In summary, there are recommended hours of sleep that are associated with better outcomes for children at all ages and stages of development. High sleep quality is also linked to children’s abilities to control their negative behaviour and focus their attention — both important skills for success at school and in social interactions.
Wendy Hall, Professor, Associate Director Graduate Programs, UBC School of Nursing, University of British Columbia
This article was originally published on The Conversation. Read the original article.
