Kindly download the file to view enjoyable animations done in the ppt :)
This is a short presentation about Dreams, that we see in our daily lives while sleeping. There are some general concepts shown in the presentation, not much about the technicality of the dreams. Meanings of different kind of dreams are also illustrated. A rare topic - lucid dreaming has also been given some emphasis. People who don't know about "this man" can get knowledge about that guy from this presentation,
hope you like it! :)
Amnesia is a form of memory loss. Some people with amnesia have difficulty forming new memories. Others can’t recall facts or past experiences. People with amnesia usually retain knowledge of their own identity, as well as motor skills. Mild memory loss is a normal part of aging. Significant memory loss, or the inability to form new memories, may indicate the presence of an amnestic disorder.
Kindly download the file to view enjoyable animations done in the ppt :)
This is a short presentation about Dreams, that we see in our daily lives while sleeping. There are some general concepts shown in the presentation, not much about the technicality of the dreams. Meanings of different kind of dreams are also illustrated. A rare topic - lucid dreaming has also been given some emphasis. People who don't know about "this man" can get knowledge about that guy from this presentation,
hope you like it! :)
Amnesia is a form of memory loss. Some people with amnesia have difficulty forming new memories. Others can’t recall facts or past experiences. People with amnesia usually retain knowledge of their own identity, as well as motor skills. Mild memory loss is a normal part of aging. Significant memory loss, or the inability to form new memories, may indicate the presence of an amnestic disorder.
“Have you ever experienced bouncing around in gigantic bubbles in the sky? Have you ever undergone the punishment of a crime you never committed? Or have you ever felt like you’ve met someone before, when in reality you haven’t even seen them ever?”
- – – I’m sure you have!
This is the presentation based on the article I wrote on Dreaming. You can have a look at the article to have a better understanding:
http://thoughtsintowords.hol.es/philosophy/thetheoryofdreaming/
http://thoughtsdecipheredintowords.blogspot.com/2014/12/the-theory-of-dreaming.html
You can also like my page for more reads:
https://www.facebook.com/thoughtsdecipheredintowords
Also, subscribe on my website if you like.
And, don't forget to share the work you like. That is one way to express your admiration.
This was a lecture in the course "Significant Medical Conditions in Seniors" presented at Peer Learning in Chapel Hill, NC, USA in 2016 by Michael C. Joseph, MD, MPH.
Having a good mental health is very important for everyone holistic well-being. This document contains the information about how to cope with it and when to ask for professional health. If you want to maintain healthy brain health try Neurodrine dietary supplements. neurodrineonline.co
Your mind works a lot like a computer. Your brain puts information it judges to be important into "files." When you remember something, you pull up a file. Memory doesn't always work perfectly. As people grow older, it may take longer to retrieve those files. Some adults joke about having a "senior moment."
It's normal to forget things once in awhile. We've all forgotten a name, where we put our keys, or if we locked the front door. Seniors who forget things more often than others their age may have mild cognitive impairment. Forgetting how to use the telephone or find your way home may be signs of a more serious problem. These include Alzheimer's disease or other types of dementia, stroke, depression, head injuries, thyroid problems, or reactions to certain medicines. If you're worried about your forgetfulness, see your doctor.
Have you ever had a moment when you feel like your life is flashing before your eyes? It is a strange sensation, but it appears to occur to people more often than one might think. In this blog post, we will explore what is happening in the brain when your life flashes before your eyes and the potential health implications. We will also examine what causes life flashes and how they can be avoided. By the end of this post, you should have a better understanding of what is happening in your brain when you experience life flashes.
“Have you ever experienced bouncing around in gigantic bubbles in the sky? Have you ever undergone the punishment of a crime you never committed? Or have you ever felt like you’ve met someone before, when in reality you haven’t even seen them ever?”
- – – I’m sure you have!
This is the presentation based on the article I wrote on Dreaming. You can have a look at the article to have a better understanding:
http://thoughtsintowords.hol.es/philosophy/thetheoryofdreaming/
http://thoughtsdecipheredintowords.blogspot.com/2014/12/the-theory-of-dreaming.html
You can also like my page for more reads:
https://www.facebook.com/thoughtsdecipheredintowords
Also, subscribe on my website if you like.
And, don't forget to share the work you like. That is one way to express your admiration.
This was a lecture in the course "Significant Medical Conditions in Seniors" presented at Peer Learning in Chapel Hill, NC, USA in 2016 by Michael C. Joseph, MD, MPH.
Having a good mental health is very important for everyone holistic well-being. This document contains the information about how to cope with it and when to ask for professional health. If you want to maintain healthy brain health try Neurodrine dietary supplements. neurodrineonline.co
Your mind works a lot like a computer. Your brain puts information it judges to be important into "files." When you remember something, you pull up a file. Memory doesn't always work perfectly. As people grow older, it may take longer to retrieve those files. Some adults joke about having a "senior moment."
It's normal to forget things once in awhile. We've all forgotten a name, where we put our keys, or if we locked the front door. Seniors who forget things more often than others their age may have mild cognitive impairment. Forgetting how to use the telephone or find your way home may be signs of a more serious problem. These include Alzheimer's disease or other types of dementia, stroke, depression, head injuries, thyroid problems, or reactions to certain medicines. If you're worried about your forgetfulness, see your doctor.
Have you ever had a moment when you feel like your life is flashing before your eyes? It is a strange sensation, but it appears to occur to people more often than one might think. In this blog post, we will explore what is happening in the brain when your life flashes before your eyes and the potential health implications. We will also examine what causes life flashes and how they can be avoided. By the end of this post, you should have a better understanding of what is happening in your brain when you experience life flashes.
Introduction:
RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is an important biological process for modulating eukaryotic gene expression.
It is highly conserved process of posttranscriptional gene silencing by which double stranded RNA (dsRNA) causes sequence-specific degradation of mRNA sequences.
dsRNA-induced gene silencing (RNAi) is reported in a wide range of eukaryotes ranging from worms, insects, mammals and plants.
This process mediates resistance to both endogenous parasitic and exogenous pathogenic nucleic acids, and regulates the expression of protein-coding genes.
What are small ncRNAs?
micro RNA (miRNA)
short interfering RNA (siRNA)
Properties of small non-coding RNA:
Involved in silencing mRNA transcripts.
Called “small” because they are usually only about 21-24 nucleotides long.
Synthesized by first cutting up longer precursor sequences (like the 61nt one that Lee discovered).
Silence an mRNA by base pairing with some sequence on the mRNA.
Discovery of siRNA?
The first small RNA:
In 1993 Rosalind Lee (Victor Ambros lab) was studying a non- coding gene in C. elegans, lin-4, that was involved in silencing of another gene, lin-14, at the appropriate time in the
development of the worm C. elegans.
Two small transcripts of lin-4 (22nt and 61nt) were found to be complementary to a sequence in the 3' UTR of lin-14.
Because lin-4 encoded no protein, she deduced that it must be these transcripts that are causing the silencing by RNA-RNA interactions.
Types of RNAi ( non coding RNA)
MiRNA
Length (23-25 nt)
Trans acting
Binds with target MRNA in mismatch
Translation inhibition
Si RNA
Length 21 nt.
Cis acting
Bind with target Mrna in perfect complementary sequence
Piwi-RNA
Length ; 25 to 36 nt.
Expressed in Germ Cells
Regulates trnasposomes activity
MECHANISM OF RNAI:
First the double-stranded RNA teams up with a protein complex named Dicer, which cuts the long RNA into short pieces.
Then another protein complex called RISC (RNA-induced silencing complex) discards one of the two RNA strands.
The RISC-docked, single-stranded RNA then pairs with the homologous mRNA and destroys it.
THE RISC COMPLEX:
RISC is large(>500kD) RNA multi- protein Binding complex which triggers MRNA degradation in response to MRNA
Unwinding of double stranded Si RNA by ATP independent Helicase
Active component of RISC is Ago proteins( ENDONUCLEASE) which cleave target MRNA.
DICER: endonuclease (RNase Family III)
Argonaute: Central Component of the RNA-Induced Silencing Complex (RISC)
One strand of the dsRNA produced by Dicer is retained in the RISC complex in association with Argonaute
ARGONAUTE PROTEIN :
1.PAZ(PIWI/Argonaute/ Zwille)- Recognition of target MRNA
2.PIWI (p-element induced wimpy Testis)- breaks Phosphodiester bond of mRNA.)RNAse H activity.
MiRNA:
The Double-stranded RNAs are naturally produced in eukaryotic cells during development, and they have a key role in regulating gene expression .
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
1. An Overview of Déjà Vu
Scientific findings and speculation concerning the déjà vu experience
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2. What am I going to talk about?
•A definition
•Facts
What is déjà
vu?
•Problems in finding the causes
•Some scientific explanations
•Brain parts involved in déjà vu
What causes
déjà vu?
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4. A definition
Déjà vu is that feeling when you experience something familiar, but in fact it is novel.
“We have all some experience of a feeling which comes over us occasionally, of what we
are saying or doing having been said or done before, in a remote time – of our having
been surrounded, dim ages ago, by the same faces, objects and circumstances – of our
knowing perfectly what will be said next, as if we suddenly remembered it” (Dickens 1849).
Standard definition: Any subjectively inappropriate impression of familiarity of a present
experience with an undefined past.
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5. Facts
Lifetime Incidence: Everybody experiences at least one déjà vu in his/her lifetime.
Not Frequent: Healthy brains do not experience it very frequent.
Decreases with Age: It starts from 8-9 and mostly happens when you are young.
Education: Happens more to better educated people.
Travel: There would be lots of new physical locations and logically, more chance of déjà vu.
Fatigue: Déjà vu experiences are more likely when fatigued.
Brain illness: Déjà vu can be associated with some brain illnesses.
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7. Problems in finding the causes
We don’t know when déjà vu happens, it’s not frequent
Some methods are used for problematic brains, but …
Its results are not applicable to healthy brains
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8. Some scientific explanations
There are lots of explanations, but none is certain.
They fall into four categories:
1. Dual-processing explanations.
2. Neurological explanations.
3. Memory explanations.
4. Attentional explanations.
We will have a quick brief over them.
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9. Some scientific explanations
Dual
Processing
Familiarity
and retrieval
Encoding and
retrieval
Perception
and memory
Dual
consciousness
Neurological
Seizure
Neural
transmission
delay
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Memory
Conflict in source
monitoring
processes
Duplication of
processing
Single-element
familiarity
Single-element
emotional
association
Gestalt familiarity
Attentional
Perceptual
fluency
Inattentional
blindness
10. Dual-Processing Explanations
This explanations assume that two cognitive processes
that normally operate in synchrony become
momentarily uncoordinated or out of phase.
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Novel experience
Perception
Memorizing
2
1
Retrieve
Novel experience
Perception
Memorizing
1
2
Retrieve
Normal
Déjà vu
An example of dual-Processing explanations.
1 and 2 show precedence
1
11. 11
Neurological explanations
Suggest that déjà vu represents a brief dysfunction in
the nervous system involving either a small seizure or
alteration in the normal time course of neuronal
transmission.
2
EEG results of a patient with TLE. Déjà vu is part
of the preseizure aura in some TLEs. A logical
extension is that déjà vu in nonepileptic individuals
results from a small temporal lobe seizure
TLE = Temporal Lobe Epilepsy
EEG = Electroencephalography
13. 13
Attentional explanations
Attentional interpretations posit that an initial
perception under distraction is followed immediately
by a second perception under full attention.
4
Distracted (Pay attention to the music)
Immediately after that - Paying attention to the scene
14. Brain parts involved in déjà vu
According to scientific explanations, many parts of the brain can be involved in this
phenomenon.
Temporal Lobe has been studied in many literature, since:
Frequent déjà vu experience with longer duration is reported in patients with Temporal Lobe
Epilepsy (TLE).
Hippocampus which plays important role in consolidating information and memorizing is in
Temporal lobe. Any malfunction of Hippocampus can have a role in experiencing déjà vu.
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15. Final words
Although everybody experiences déjà vu during his/her life, still there’s no dominant
explanation for this phenomenon.
Temporal lobe may be the part of the brain in which déjà vu can be triggered from.
In Week 10, Module 1 to 3, Prof. Mason talks a little about attention in “Thalamic Attention”
lecture and she talks about Temporal lobe and Hippocampus in “The Story of H.M.” and
“Memory Formation Circuitry” lectures. Her notes about “implicit Perceptual Memory” in
“Memory Types” lecture somehow can be used in attentional interpretations of déjà vu.
They all helped me understand listed explanations about déjà vu.
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17. References
Mainly from:
Brown, Alan S. "A review of the déjà vu experience." Psychological bulletin 129.3 (2003): 394.
Other resources:
Warren-Gash, Charlotte, and Adam Zeman. "Deja vu." Practical Neurology 3.2 (2003): 106-109.
Vlasov, P. N., A. V. Chervyakov, and V. V. Gnezditskii. "Déjà vu phenomenon-related EEG
pattern. Case report." Epilepsy & Behavior Case Reports 1 (2013): 136-141.
See also:
https://www.youtube.com/watch?v=CSf8i8bHIns
https://www.youtube.com/watch?v=foVMwJtlR5s
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