Articles by Jared Tanner, MS
Neuroscience & Neurology | By September 28, 2009 | By Jared Tanner, MS | 4 Comments
Postoperative Cognitive Dysfunction
In the mid 1950s, Dr. Bedford reported on a number of older adults who exhibited cognitive problems (memory or planning or being able to sustain attention) following surgery where anesthesia was used. This effect is now called postoperative cognitive dysfunction (or decline; POCD). POCD typically lasts for a few months to a year with a small minority of patients exhibiting permanent decline. Studies about it were few at first, with most focusing on cognition following cardiac surgery. Over time and especially more recently, there has been an increase in research of POCD following non-cardiac surgeries (e.g., abdominal or orthopedic) as well as continued interest in POCD following cardiac surgery. Read more →
- Mood and Functional Disability – A Positive Feedback Loop
- Creating an Artificial Brain
- What is Free Will?
- Free Will and the Philosophy of Science
- Cognitive Theories and Brain Damage
- Essential Tremor and Parkinson’s Disease
Emotional or mood problems are more frequent in people with disabilities (of any severity or duration) than in the general population. Rates range from about 20% to 50%, depending on the study and the population – from spinal cord injury to multiple sclerosis to stroke. It is important to understand the rates and types of mood disorders because the functional deficits associated with disability (I’m using disability to refer to any sort of loss of function, even if it is only temporary) can manifest similarly to mood disorder symptoms. For example, what might look like anhedonia could simply be inability to do much, or at least the reticence to be active because of pain or functional loss. Read more →
Dr. Henry Markram recently announced that he expects to have a computer model of the human brain in ten years. As part of the Blue Brain Project, he is part of a team trying to “reverse-engineer the mammalian brain.”
The human brain is exceedingly complex. There are about 100 billion neurons within the human central nervous system (brain and spinal cord) with an estimated 100 trillion synapses (connections between neurons). Read more →
This post continues my discussion of free will and determinism in neuroscience. Due to the relatively brief nature of these posts, this discussion is incomplete. However, I hope it spurs additional discussion. I believe addressing free will and determinism allows us to understand the underlying theories and implications of neuroscience and social science research as well as the practical application of that research.
For this article, the main questions are: “Is behavior biologically determined?” and “Do humans have free will?” I will not address in this post the argument between compatibilism and incompatibilism. In response to comments and questions about my previous post, I thought it necessary to attempt to define free will before I write further posts on this general topic of free will and biological determinism in the neurosciences. Read more →
For many years the discussion over the existence of free will was limited to philosophers and theologians. Scientists started talking about free will once science started separating as a discipline from philosophy. However, it wasn’t until the rise of functional neuroimaging that some neuroscientists started studying if the brain and deterministic brain processes could explain away free will. In short, some scientists want to discover whether or not free will is merely an illusion, an idea humans create out of an innate desire to feel in control. Read more →
Cognitive theorists postulate how information is processed. For example, is it like a computer where all the information is broken down into bits, processed, and then reassembled for output? Or is processing handled in a completely different manner? One prevalent way to test theories of cognitive psychology is by studying patients (whether human or animal) with brain damage. There are both advantages and disadvantages to using brain-damaged patients to test and construct cognitive theories. Read more →
Parkinson’s disease (PD) and essential tremor are both primarily movement disorders. The symptoms are commonly confused with each other, mainly because essential tremor is not as well known as PD even though essential tremor is more prevalent. High-profile people like Michael J. Fox and Muhammad Ali raised our awareness of PD in the 1990s just like Pres. Ronald Reagan did with Alzheimer’s disease in the 1980s. Because of this, essential tremor is not as well-known to the general public even though more people suffer from it than from PD. Read more →
Friday, March 19, 2010
- Religion - A "Natural" Phenomenon?
- Psychotropics and Youth, Part 1 - The Five Myths
- How Culture Shapes Our Mind and Brain
- Sex, Violence and The Male Warrior Hypothesis
- The Secret to Good Health – Listen to the Data
- If Herbal Medicine is Medicine, Shouldn't it be Treated as Such?
- Neurology, Neurosurgery, and Neuroscience Conferences for 2010
- Too Much Information?
- "I Feel Your Pain" - The Neural Basis of Empathy
- Income Inequality and Health Outcomes
- The Evolution of Depression
- Journal Retracts Autism Research
- Speaking in Tongues - A Neural Snapshot
- Post-Partum Psychosis - Rare but Real
- Is Your Doctor Happy or Burnt-Out?
- Ginkgo Biloba Ineffective... Again
- Worried Well on the Web
- Psychotropics and Youth, Part 2 - The Solutions
- Why Some Human Brains Become Leaders, While Others Followers?
- Postoperative Cognitive Dysfunction
- Let the Matches Begin!
- My Nephew and his Brain, Part 4 – Their Life Today
- My Nephew and his Brain, Part 3 – Try to Work Out their Troubles
- My Nephew and his Brain, Part 2 – Revealed to be Complicated
- My Nephew and his Brain, Part 1 – Introduction
- Deep Brain Stimulation – A New Frontier in Psychiatry
- Psychotropics and Youth, Part 3 – Equip Teachers with Prescription Pads?
- Why Some Human Brains Become Leaders, While Others Followers?
- Brain Blogger Finalist for Two 2010 Research Blogging Awards in Neuroscience and Psychology
- Tall Tales of Diabetic Amputations
- Psychotropics and Youth, Part 2 – The Solutions
- Brain Blogging, Forty-Ninth Edition
- How Your Brain Groups Words
- The Child Brain and the Playing Teacher
- You Have a Right to Choose if we Agree
- Measuring Quality in Primary Care
- Matchmaker, Matchmaker Make Me A Match – The NRMP Main Residency Match
- Psychotropics and Youth, Part 1 – The Five Myths
- When It Comes to Aging, Size Matters
- “I Feel Your Pain” – The Neural Basis of Empathy
- Very touching story. My heart goes out to your family. Seizures are tough. And ...
- Thank you for sharing your nephew's story. So hard on those who love him, but I...
- Congratulations to all who've matched! Although the results of NRMP Main Residen...
- It's been almost 25 years since my son suffered a TBI in an accident. He was onl...
- I tend to agree with the teachers.But a teacher can only keep a record about the...
- Very interesting article, the 5th paragraph gets a little biased...but I still e...
- Dear Dan,There is certainly much clinical interest in this field. ClinicalTr...
- I recently commented on a sciencedaily.com article reporting success with TRD an...
- I have family members who are teachers. After sharing this article with them, th...
- It is great that people are challenging the use of this medication. As, a societ...
- I agree with the stand of the teachers and their children's that more than half ...
- I think that there’s also a social aspect to it. If you grow up in an area where...
- I have had epilepsy since I was 9 and am now 42. I have tried about every med. o...
- In this text is a serious error. Brain areas are found that contain religious ex...
- It's amazing how the brain works....
- Organ transplant for unavoidable patients have been around for quite some time a...
- Diet plays a major role in having diabetes. In today's world, people are finding...
- Interesting... I think that there's also a social aspect to it. If you grow up i...
- I think the article is actually describing a normal human being. Leadership tra...
- I think that applies to leaders within certain fields of knowledge or creativity...

