Neurobiology Notes

Neurobiology Notes explores advancements in neuroscience focusing on brain preservation, neuroimaging techniques, neural connectivity, and memory encoding. It discusses innovative research methods, ethical considerations in brain banking, and the genetic basis of neurological and psychiatric conditions. The blog also covers technological progress in brain mapping and preservation strategies aimed at future revival possibilities.

Brain Preservation Neuroimaging Techniques Neural Connectivity Memory Encoding Brain Banking Ethics Genetics of Neurological Conditions Technological Advances in Neuroscience Preservation Strategy and Techniques

The hottest Substack posts of Neurobiology Notes

And their main takeaways

Visualizing astroglia near hippocampal synapses

0 implied HN points • 14 Feb 10
  1. The relationship between astroglia and synapse morphology was studied in epileptic patients and one control patient.
  2. Dendritic spines were classified based on morphology and organelles in the hippocampal tissue samples.
  3. The number of docked synaptic vesicles correlated positively with postsynaptic density in tissue with mild neurodegeneration.

Subsdize Earnestness

0 implied HN points • 14 Feb 10
  1. Incentives today pressure people to downplay hard work, causing confusion in project estimations.
  2. Glorify the messy middle steps of successful endeavors to promote sharing and reduce mysteriousness.
  3. Avoid those who act mysteriously and prioritize transparency in plans for long-term success.

Blog Slow Homie

0 implied HN points • 07 Feb 10
  1. Blogging is becoming less cool among teens and twentysomethings.
  2. Older people are now the main demographic for blogging.
  3. Cooler blogs may focus more on short-term activities and less on personal branding.

Cognitive Dissonance And Time Perception In Harry Potter

0 implied HN points • 27 Jan 10
  1. Readers may rate longer books more positively due to cognitive dissonance and time perception.
  2. Readers of Harry Potter may have been positively influenced by the book's length, dialogue, and time perception.
  3. Including dialogue and extra numbered pages may enhance reader's perception of book length and enjoyment.

Combining x-ray tomography with serial section transmission electron microscopy

0 implied HN points • 24 Jan 10
  1. Researchers combined x-ray tomography with transmission electron microscopy to image small gold particles in rat lungs.
  2. They used vascular perfusion and sectioning techniques to accurately locate the 200 nm gold particles.
  3. The study shows the potential of using tomographic microscopy to create 3D models and confirm structures with electron microscopy.
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Friend or Algorithm?

0 implied HN points • 13 Jan 10
  1. Consider whether you trust recommendations more from friends or algorithms.
  2. Rating systems are often based on the opinions of average people or individuals similar to you.
  3. Choosing between friends and algorithms can impact noise in opinion markets.

Question #12: Two types of central pattern generators

0 implied HN points • 11 Jan 10
  1. Central pattern generators (CPGs) are networks of neurons that produce rhythmic output for motor control.
  2. There are two major types of CPGs: driven by an endogenous oscillator neuron, and driven by the activity of a large network.
  3. CPGs are fundamental in various human functions like locomotion, swallowing, respiration, ejaculation, and scratching.

Question #11: Where does the plasticity of the vestibular ocular reflex occur?

0 implied HN points • 10 Jan 10
  1. The semicircular canals play a crucial role in maintaining eye focus during head movements by controlling specific eye muscles.
  2. The vestibular-ocular reflex (VOR) in primates is a model system for plasticity and motor learning, adapting to keep pace with visual movement.
  3. Debate exists over whether the cerebellum stores the memory for VOR adaptation or simply guides the induction of plasticity.

Deterrent Effects of the Death Penalty in Texas?

0 implied HN points • 09 Jan 10
  1. A study in Texas found that for each execution, there was a deterrent effect of 2.5 homicides and 0.5 homicides.
  2. The study discussed a model suggesting that potential criminals might be less likely to commit murder for a short period after hearing about an execution.
  3. The concept of 'displacement effect', where there might be an increase in homicides after some time, was found questionable in the study.

Time Transparency in Blogging, 2009

0 implied HN points • 05 Jan 10
  1. The author kept track of how much time they spent blogging each month in 2009.
  2. The time spent per week averaged about 1.83 hours to produce 3.01 posts.
  3. The author emphasizes that maintaining a decent blog doesn't require a lot of time.

Behavioral fMRI Has No Clothes?

0 implied HN points • 01 Jan 10
  1. Physics majors & non-physics majors show different brain activation patterns while watching a physics experiment.
  2. Certain brain regions consistently activate in specific tasks.
  3. The significance of fMRI data in understanding how people interpret information is questioned.

Question #6: Amplification of auditory and olfactory sensation

0 implied HN points • 24 Dec 09
  1. Auditory sensation is amplified by outer hair cells in the cochlea.
  2. Olfactory sensation involves chloride amplification in response to odors.
  3. Both auditory and olfactory systems require complex mechanisms for signal amplification.

Three problems with quantum dots for in vivo imaging

0 implied HN points • 23 Dec 09
  1. Quantum dots are usually too big for very small morphological regions, like the synaptic cleft.
  2. Tracking multiple molecules bound to quantum dots can be difficult due to blinking, requiring sophisticated algorithms.
  3. Quantum dots can affect the ligand characteristics of bound molecules, impacting experimental results.

Single neuron resolution following post-mortem dissection

0 implied HN points • 22 Dec 09
  1. Advancements in technology now allow for detailed dissection and analysis of single neurons post-mortem.
  2. There is ongoing discussion about the necessary level of scale separation to capture memories encoded by NMDA receptors.
  3. Single neuron maps are becoming more accessible, offering better opportunities to study intercellular connections.

Three techniques to map neural circuitry

0 implied HN points • 17 Dec 09
  1. Neuroscientists use techniques like ATLUM, electron microscopy, and diffusion tensor imaging to map neural circuitry.
  2. They are inspired by the semiconductor industry and aim to automate the best techniques.
  3. Research labs like Lichtman's, Denk's, and Van Weeden's are leading the way in mapping neural circuitry.

Most Interesting Sections of Year in Ideas

0 implied HN points • 12 Dec 09
  1. The Year in Ideas features interesting sections each year.
  2. Massively collaborative mathematics is a powerful concept where tough theorems can be proven through crowdsourcing.
  3. Innovation in technology and science is driven by diverse and novel approaches like printable batteries and man-made greenery.

How to Read Books

0 implied HN points • 01 Dec 09
  1. Choose books carefully, focusing on intermediate size written by single expert authors.
  2. Master general principles over remembering details when reading.
  3. Take regular breaks during reading sessions for better comprehension.

Personal vs Objective Rating Systems

0 implied HN points • 24 Nov 09
  1. Personal opinion and objective rating may differ
  2. IMDb scores are currently the most accurate ratings
  3. Can speculate on underrated/overrated movies based on personal opinion

Nine EYRGBHTV thoughts

0 implied HN points • 16 Nov 09
  1. Power has become more accessible over history, making stoicism less relevant.
  2. Greene values power over happiness, believing true happiness comes from pursuing victory.
  3. Having risk tolerance and being willing to attack challenges head-on is crucial for success.

A Case Study in Secret Telling: Tim Donaghy

0 implied HN points • 30 Oct 09
  1. Tim Donaghy made allegations about biases of NBA refs, like betting on technical fouls and favoring certain players.
  2. Evidence in Donaghy's favor includes specific details and an FBI agent's endorsement.
  3. Challenges against Donaghy include book cancellation and NBA denial, creating a debate over the truthfulness of his claims.

Contact Sports and the Brain

0 implied HN points • 18 Oct 09
  1. Contact sports can result in long-term brain trauma, like seen in NFL, college football, and boxing.
  2. Proper technique is crucial in sports like soccer to avoid concussions, especially during headed balls.
  3. Excessive drinking can also lead to brain trauma, increasing the risk of accidents and assaults.

Faceism and the Law

0 implied HN points • 16 Oct 09
  1. Study showed judges' decisions in small claims court can be influenced by defendant's facial features
  2. Research raises questions on why judges and juries still examine plaintiff and defendant faces
  3. Calls for focus on discrimination against various groups, not just specific ones

Sleep and Consciousness: Anatomical Help Wanted

0 implied HN points • 11 Oct 09
  1. Researchers studying consciousness should focus on examining anatomical substrates rather than only theorizing.
  2. Additional anatomical data could refine theories on the functions of sleep, such as metabolic restoration and memory consolidation.
  3. Neural anatomical data could provide insights into various sleep phenomena and potentially contribute to understanding phenomenal experiences.

Sharp-wave ripples in slow wave sleep promote memory consolidation

0 implied HN points • 10 Oct 09
  1. Memory consolidation involves two steps: initial encoding by the hippocampus and subsequent transfer of information to the neocortex during slow wave sleep.
  2. Enhancing slow wave sleep quality improves performance on hippocampus-dependent tasks.
  3. Disrupting sharp-wave ripple events during sleep can impair spatial learning in rats.

Conscious Thinking Doesn't Help As Much

0 implied HN points • 09 Oct 09
  1. Unconscious decision-making is often more effective than conscious thinking.
  2. Unconscious thought processes information efficiently while conscious thought can be biased.
  3. Trusting your instinct and acting on gut feelings can lead to better outcomes.

Decline in hippocampal plasticity mediated by deficits in D-serine

0 implied HN points • 06 Oct 09
  1. D-serine plays a crucial role in activating NMDA receptors and inducing synaptic plasticity in the hippocampus.
  2. Deficiencies in D-serine may contribute to reduced cognitive function in aging brains.
  3. Adding exogenous D-serine can rescue age-related decreases in NMDA receptor activity in the hippocampus.

Asymmetric distribution of miRNA's in the rat brain

0 implied HN points • 06 Oct 09
  1. MicroRNA's in the rat brain have asymmetric distribution and are clustered based on biological activity
  2. Mutations in miRNA's have been linked to schizophrenia
  3. MiRNA's may play a role in neural development and interact with insulin-like growth factor 1

In Favor of the Monomath

0 implied HN points • 05 Oct 09
  1. Polymaths are less common nowadays due to specialization in scientific fields.
  2. Big advances in science are often made by collaborative research teams.
  3. Efficiency in the scientific system is increasing with less focus on individual recognition.

Surprising Top Wikipedia Articles

0 implied HN points • 01 Oct 09
  1. Favicon.ico was a top Wikipedia article because many people wanted to learn how to add it to their website.
  2. Wikipedia is a go-to source for current events, like the list of deaths in 2009 being a top article.
  3. Some surprising top Wikipedia articles included India, Australia, and the TV series Scrubs.

Chemo Not Therapy

0 implied HN points • 21 Sep 09
  1. The post discusses a blog called Chemo Not Therapy about a fight against cancer.
  2. The content is considered powerful and worth checking out.
  3. The blog is recommended for those interested in the topic or looking for inspiration.

Book notes Neuroengineering

0 implied HN points • 21 Sep 09
  1. Passing electrical current through tissues can stimulate neurons to produce action potentials.
  2. Deep brain stimulation using an electrode implanted in the subthalamic nucleus can relieve symptoms of various neurological disorders.
  3. Brain-computer interfaces can convert electrophysiological signals into real-world output, with ECoG systems showing great potential.

Searching for the Imdb of Books

0 implied HN points • 16 Sep 09
  1. Amazon Reviews has a big audience but lacks depth in book ratings
  2. The Internet Book List needs to attract more users to scale effectively
  3. Different book rating websites have unique upsides and downsides in their systems

Topography of carbon nanotubes confers better adhesive properties

0 implied HN points • 14 Feb 09
  1. Carbon nanotube topography enhances adhesive properties for neuronal growth
  2. Neurons tend to migrate to the edge and intertwine with carbon nanotube surfaces
  3. The mechanism of neuronal adhesion to rough surfaces like carbon nanotubes differs from smooth surfaces like silicon dioxide

Maladroit Abstraction

0 implied HN points • 30 Aug 09
  1. Obvious things can be simple, but if complicated things seem obvious, it may be due to abstracting away important details.
  2. Arguments can arise due to differing focuses on premises versus implications, leading to tedious conversations.
  3. Recognizing when conversations should be about premises or implications can help in quickly resolving disagreements.

Protein synthesis inhibitor reduces late-phase long-term potentiation in hippocampus

0 implied HN points • 29 Jun 09
  1. A study showed that inhibiting protein synthesis in postsynaptic neurons reduces long-term potentiation in the hippocampus
  2. This research indicates the importance of postsynaptic protein synthesis in late-phase long-term potentiation
  3. Understanding synaptic changes and the transport of newly synthesized proteins to specific dendrites is crucial

Characterizing neural development based on single neuron analysis

0 implied HN points • 26 Jun 09
  1. Neurons of the same lineage exist as clusters in the central brain and ventral nerve cord.
  2. There is a unit production of mature neurons that arise from any given neuroblast.
  3. Understanding the determination of neurons is crucial in brain development.

Why Does Driving Become Less Fun?

0 implied HN points • 23 Jun 09
  1. Driving becomes less fun with increased familiarity and less novelty.
  2. Creating rules and expectations while driving can lead to frustration when they are transgressed.
  3. As drivers become more experienced, they become more aware of potential dangers and this can increase anxiety, making driving less enjoyable.

Characterizing the properties of epilepsy

0 implied HN points • 19 Jun 09
  1. Epilepsy has been observed in humans for 5000 years, traced back to Hippocrates
  2. EEG invention in the 1920s was a significant step in epilepsy research for understanding brain activity during seizures
  3. Seizures can be focal or affect broader brain regions, impacting awareness, memory, language, and consciousness

Carbon nanotubes as an interface for retinal implants

0 implied HN points • 19 Jun 09
  1. Carbon nanotubes show potential as an interface for retinal implants.
  2. Rodent studies indicate that carbon nanotube interfaced electrodes had improved electrical coupling with neurons compared to traditional TiN electrodes.
  3. Challenges remain in engineering retinal implants, including biocompatibility and electrode-cell ratio.

Can You Destroy This Tumor?

0 implied HN points • 18 Jun 09
  1. A thought experiment about destroying a tumor with radiation without harming healthy tissue
  2. Only about 10% of participants solve the challenge without using a search engine
  3. The answer to the challenge is not provided in the initial post