The document discusses hormones and their effects on behavior. It defines hormones as chemical messengers that travel through the bloodstream and affect growth, metabolism, and other processes. There are two main classes of motivated behaviors - regulatory behaviors controlled by homeostasis and non-regulatory behaviors like sexual behavior that are not. Sex hormones have both organizational effects during development that shape the brain and activation effects in adulthood that influence behaviors like sexual motivation. Pheromones are similar to hormones but work outside the body to induce responses in other individuals.
Reproductive behaviour: 1-Sexual behaviour in animalsrhfayed
Reproductive Behaviour involve behaviour patterns associated with courtship, copulation, birth, maternal care and with suckling attempts of newborn. It is species specific behaviour
Reproductive behaviour: 1-Sexual behaviour in animalsrhfayed
Reproductive Behaviour involve behaviour patterns associated with courtship, copulation, birth, maternal care and with suckling attempts of newborn. It is species specific behaviour
Principle of Ethology with special reference to pattern of behaviorDIPJYOTIBORAH3
1. Introduction
a. What is Ethology?
b. Origin & History of Ethology.
2. Principles of Ethology.
3. Some Special Reference of Ethology.
4. Patterns and Behaviour.
5. Conclusion.
6. Reference.
Animals secrete pheromones to trigger many types of behaviors, including:
raising an alarm
signaling a food trail
triggering sexual arousal
tell other female insects to lay their eggs elsewhere
delineating a territory
bond between mother and offspring
warning another animal to back off
Principle of Ethology with special reference to pattern of behaviorDIPJYOTIBORAH3
1. Introduction
a. What is Ethology?
b. Origin & History of Ethology.
2. Principles of Ethology.
3. Some Special Reference of Ethology.
4. Patterns and Behaviour.
5. Conclusion.
6. Reference.
Animals secrete pheromones to trigger many types of behaviors, including:
raising an alarm
signaling a food trail
triggering sexual arousal
tell other female insects to lay their eggs elsewhere
delineating a territory
bond between mother and offspring
warning another animal to back off
Richard's aventures in two entangled wonderlandsRichard 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.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
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.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
1. Animal Behavior (Zoology) Assignment
Page 1 of 7
Name:
Program:
Subject:
Topic: H
University of Education, Division of Science and Technology
Assignment
Name: Abdullah Khan
Program: MSc Zoology
ubject: Zoology
H o r m o n e s A n d B e
Education, Division of Science and Technology, Township, Lahore
@Abdullah Khan
Abdullah Khan
Zoology
e h a v i o r
, Township, Lahore
2. Animal Behavior (Zoology) Assignment @Abdullah Khan
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Hormones And Behavior
Hormones:
Hormones are your body's chemical messengers. They travel in your bloodstream to tissues or organs. They
work slowly, over time, and affect many different processes, including: Growth and development. Metabolism
- how your body gets energy from the foods you eat.
Classification of hormones:
Hormones can be classified according to their chemical nature, mechanism of action, nature of action, their
effects, and stimulation of Endocrine glands.
1. Chemical nature of hormones:
This category of hormones are divided to six classes, they are hormones steroid; amines; peptide;
protein; glycoprotein and eicosanoid. They are further described in Table 13.3. Steroid hormones are
classified according to the organs that synthesize them therefore this hormone are classified as sex
hormones, adrenal cortex hormones and placenta hormones.
a. Sex hormones:
These are group of hormone that produced in the testes in males and ovaries in the female. The male
sex hormones are usually referred to as androgens and the principal androgen is known as
testosterone. These hormones are produced primarily by the testes and in discrete amounts by
the adrenal cortex. Androgens are primarily responsible for the proper development and maintenance
of male reproductive function and stimulation of the secondary sex characteristics. Androgens are
anabolic, and used in stimulating the production of skeletal muscles and bone as well as red blood
cells. In order to enhance the anabolic activity of androgens without increasing their masculinizing
ability, anabolic steroids were developed to combat diseases marked by wasting, these synthetic
hormones have been abused by individuals desiring to increase their muscle mass, such as athletes
seeking to gain a competitive advantage. Overdosing has been linked to serious side effects, including
infertility and coronary heart disease.
On the other hand, there are basically two female sex hormones which are estrogen and progestin’s.
Estrogens are secreted mainly by the ovaries and in smaller amounts by the adrenal glands and (in
men) by the testes. The most potent estrogen is estradiol. This hormone has a similar function similarly
to androgens in men, the estrogens promote the development and maintenance of the primary and
secondary female sexual characteristics; they also stimulate linear growth and skeletal maturation. In
some other mammals these hormones have been shown to precipitate estrus (heat). The ovarian
production of estrogen stops plummets during menopause.
3. Animal Behavior (Zoology) Assignment @Abdullah Khan
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b. The adrenal cortex hormones:
These hormones are produced in the adrenal cortex. They are mainly adrenocortical hormones, which
basically divided to two, i.e., glucocorticoids and the mineralocorticoids. Glucocorticoids consist of
hormones such as cortisol which mainly control and influence many metabolic processes like
deposition of glycogen in the liver and the formation of glucose from amino acids and fatty acids. It
also helps in the maintenance of normal blood pressure, and also possessed antiinflammatory and
immunosuppressive actions, which are useful in treating rheumatoid arthritis and prevents the
rejection of transplanted organs. Mineralocorticoids like aldosterone help maintain the balance
between salts and water in the body and the predominantly exerts their effects within the kidney.
2. Mechanism of action of hormones:
a. Group I hormones
These are group of lipophilic hormones that are usually derived from cholesterol (except T3 and T4).
These hormones usually bind to intracellular receptors thereby forming hormone-receptor
complex. They are mostly found in general circulation in association with transport
proteins however they have relatively longer half-lives in hours or days. Examples of these
hormones are T3, T4, estrogen, progesterone and testosterone.
b. Group II hormones
These are hormones that bind to cell surface (plasma membrane) receptor before they stimulate
the release of certain molecules known as second messenger which will then perform the
biochemical function of these hormones. These hormones are transported in free form and they
usually possess short half-lives in minutes. Group II are further subdivided into 3 categories based
on the chemical nature of the second messenger; (i) Camp—ACTH, FSH, LH; (ii)
phospholipid/inositol/Ca2 +
—TRH, GnRH, Gastrin; (iii) Unknown—insulin STH, LTH, oxytocin.
3. Nature of hormones action
a. Local hormones—These hormones have a specific local effect through paracrine secretion, for
example, hormone testosterone
b. General hormones—These are hormones transported through circulation to the distal target
tissue/organ examples are thyroid hormones and insulin
Types of Hormone Molecules:
Hormones are heterogeneous in their molecular size, chemical properties, and pathways of synthesis. Nitric
oxide is at one extreme of the size range; the pituitary gonadotropins consisting of two subunits are among
the largest of the protein hormones with molecular weights ranging between 25 and 36 kDa, depending on
the extent of added carbohydrates (glycosylation). Peptide or protein hormones range from three amino to
over 100 per subunit. Thyroid hormone and epinephrine are derived from the amino acid tyrosine. Steroid
4. Animal Behavior (Zoology) Assignment @Abdullah Khan
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hormones and vitamin D and its metabolites are derived from cholesterol or 7-dehydrocholesterol,
respectively. Arachidonic acid, cleaved from membrane phospholipids, is the main precursor of
the prostaglandins and other eicosanoids .
The initial step in the action of a hormone, the interaction with its receptor, depends to some extent on its
chemical nature. Peptide and protein hormones have receptors that are membrane-spanning proteins so that
the molecule does not have to enter the cell, but can deliver its message on the outside where it will be
conveyed to the interior of the cell by structural changes in the receptor protein. Steroid hormones,
considered to be soluble in the phospholipid bilayer, can enter the cell so that the receptors for these
hormones are located either in the cytoplasm or the nucleus of the cell. The actions of these hormones are
propagated by interaction of the receptor with nuclear proteins and DNA. The amino acid-derived hormones
differ from one another: thyroid hormone has an intracellular receptor similar to those for the steroid
hormones and epinephrine interacts with its membrane receptor.
Anterior pituitary hormones
The hormones of the anterior lobe of the pituitary gland regulate hormone released by the peripheral
hormone glands. The release of anterior pituitary hormones is controlled by the hypothalamic releasing
hormones. Because of their high molecular weight, pituitary hormones do not cross the placenta. Therefore, a
direct effect on the fetus is not to be expected. The following hormones are released from the anterior
pituitary gland.
Growth hormone
This has effects on somatic growth and on metabolism. A hormone similar structurally and functionally to GH
is produced in increasing quantities by the placenta in advanced pregnancy. It is referred to as human
placental lactogen (HPL) or, less often, as human chorionic somatomammotropin (HCS). Functionally, this
hormone is similar to prolactin.
Follicle stimulating hormone (FSH)
This stimulates growth and maturation of the ovarian follicle, and granulosa cell release of
estrogen. Luteinizing hormone (LH) stimulates ovulation. During pregnancy, human chorionic
gonadotrophin (hCG), which is analogous to LH, is synthesized in the placenta, and is responsible for
maintaining the corpus luteum of pregnancy. FSH and a mixture of FSH and LH have been used
therapeutically. Human menopause gonadotrophins (hMG) and hCG are two of these mixtures (analogs
are menotropin and urogonadotropin). These hormones are used for ovulation induction and for additional
support of the corpus luteum. Inducing ovulation with gonadotrophins can lead to multiple pregnancies; of
these, 5–6% involve triplets (Scialli 1986). Two publications report on a rare complex of multiple
malformations and four cases of neuroblastoma in infants below 1 year, born of pregnancies involving
exposure to gonadotrophins. These findings were not confirmed in other studies, nor were other pregnancy
risks or abnormalities in early childhood and pubertal development associated with use of these agents for
ovulation induction.
5. Animal Behavior (Zoology) Assignment
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HORMONES AND BEHAVIOR
1. The Neuroendocrine System:
Sum of the glands, hormones, and target tissues/organs involved in the control of bodily functions (including behavior)
2. Glands:
Specific cell masses in various parts of the body which produce and secrete a variety of chemicals.
Types
Exocrine glands: secrete their chemicals into “ducts”,
sweat and tear glands)
Endocrine glands: ductless glands that secrete “hormones” into the general circulation (ex., pituitary
and gonadal glands)
Hierarchical control of hormones:
The brain (hypothalamus) ultimately controls many of the hormones found in the body.
This is usually regulated through “multi-
glands in the body that synthesize hormones.
In turn, many hormones reach back to the brain and influence various cognitive and behavioral functions.
Assignment
The Neuroendocrine System:
target tissues/organs involved in the control of bodily functions (including behavior)
Specific cell masses in various parts of the body which produce and secrete a variety of chemicals.
secrete their chemicals into “ducts”, which are carried to the surface of the body (ex.,
ductless glands that secrete “hormones” into the general circulation (ex., pituitary
:
(hypothalamus) ultimately controls many of the hormones found in the body.
-step” signaling mechanisms (pituitary gland) all the way to the various
glands in the body that synthesize hormones.
reach back to the brain and influence various cognitive and behavioral functions.
@Abdullah Khan
target tissues/organs involved in the control of bodily functions (including behavior)
Specific cell masses in various parts of the body which produce and secrete a variety of chemicals.
which are carried to the surface of the body (ex.,
ductless glands that secrete “hormones” into the general circulation (ex., pituitary
(hypothalamus) ultimately controls many of the hormones found in the body.
(pituitary gland) all the way to the various
reach back to the brain and influence various cognitive and behavioral functions.
6. Animal Behavior (Zoology) Assignment @Abdullah Khan
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MOTIVATED BEHAVIORS:
There are 2 general classes of motivated behaviors:
Regulatory Behaviors: behaviors controlled by a homeostatic mechanism.
Examples: temperature regulation, eating (energy) and drinking, salt appetite, waste elimination.
Non-regulatory Behaviors: behaviors that are not controlled by homeostatic mechanisms - all behaviors
excluding those regulated by homeostatic processes Examples: sexual behavior, parental behavior, aggression,
playing sports, watching TV, etc.
Example of Non-regulatory behavior: Sexual Behavior:
Gonadal (sex) hormones have various actions on the brain and behavior; these actions are both
developmental (organizational effects) and in adulthood (activation effects).
1. Organizational effects of sex steroids on the brain and body:
Process whereby gonadal hormones act on the brain to produce distinctly female or male brains;
--Some brain areas are referred to as sexually dimorphic;
--the suprachiasmatic and parts of the preoptic nuclei are generally larger in males; additional
differences in spinal cord, amygdala, and frontal cortex.
2. Activational effects of gonadal hormones:
Female reproductive cycle: While males have daily fluctuations in sex steroid levels, females display
“cycling” gonadal steroid levels, called the menstrual cycle in primates (including humans) and estrous
cycle in other mammals;
The levels of the different sex steroid hormones change significantly over the cycle period in women
(on average, 28 days).
In animals, adult female behavior varies across estrous cycle;
- high estrogen levels are associated with sexual receptivity;
- high estrogen levels are also associated with increased numbers of dendritic spines in the
hippocampus (next page).
In adult males, high testosterone levels are associated with increased motivation to seek sexual and
copulatory behaviors.
7. Animal Behavior (Zoology) Assignment @Abdullah Khan
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Pheromones:
Pheromones are similar to hormones but work outside of the body. They induce activity in other individuals,
such as sexual arousal. Most insects use pheromones to communicate. Some chemicals have been
investigated for pheromone actions in humans but evidence is weak.
*****************************************************
Abdullah Khan