Hallucinogenic Plants Professor Suleiman Olimat. What is addiction? (Latin) addictus---attached to something, positive. Today alcoholism called a “brain.

Slides:



Advertisements
Similar presentations
OPTION E E4 NEUROTRANSMITTERS AND SYNAPSES
Advertisements

OPTION E E4 NEUROTRANSMITTERS AND SYNAPSES
E.4 Neurotransmitters and Synapses. E4.1 Postsynaptic Responses Pre-synaptic neurons can inhibit or excite the post synaptic neuron by releasing excitatory.
Biology and Behavior The Nervous System is our bodies “Blueprint”: – It gathers & processes information – Responds to stimuli – Coordinates the workings.
Thinking About Psychology: The Science of Mind and Behavior Charles T. Blair-Broeker Randal M. Ernst.
Types of Psychoactive Drugs How they work. 4 WAYS THAT DRUGS WORK: 1.Some drugs, like heroin and LSD, mimic the effects of a natural neurotransmitter.
A good friend of yours hopes that hypnosis will improve his memory and help him study longer and more effectively. He worries, however, that he might not.
Neurotransmission and the CNS BY PROF. Azza El-Medany.
Chemically Modifying Behaviors Copyright 2010:PEER.tamu.edu.
1 11 How is the Nervous System Organized? Chapter 3-Neuroscience: The Brain and Behavior.
Neurotransmitters, Mood and Behaviour
 What are converging neural pathways and their involvement in light sensitivity?  What are diverging neural pathways and their involvement in fine motor.
And how they affect criminal behavior
Biological Psychology
HOW DOES OUR BRAIN SEND MESSAGES? Why do some drugs get us “high”?
Drugs and Consciousness Psychoactive Drug: A chemical substance that alters perceptions and mood (effects consciousness).
Module 22: Drugs Chapter 9: States of Consciousness.
E4 Neurotransmitters and synapses
Drugs. What is a Psychoactive Drug? Chemical substance that alters perceptions, mood, or behavior through their actions at the neural synapse Chemical.
Drugs Module 26. Classifying Drugs Psychoactive drug. –Substance capable of influencing perception, mood, cognition, or behavior. Types. –Stimulants speed.
Neurons & the Nervous System Chapter 2: The Brain and Behavior.
Upload “Neurotransmitters and Drugs” To eBackpack.
Stimulants: An Overview Nature of Stimulants Most widely consumed drug in the United States Such drugs increase alertness and increase energy Examples.
Neurotransmitters & Receptors. Sensory neuron Motor neuron Receptor potentialAction potential Synaptic potential Action potential.
Synaptic Transmission Syllabus Toole page
 A synapse divides at least 2 (usually more) neurons by ~20nm.  Presynaptic Neurons: carry impulses to the synapse  Postsynaptic Neurons: carry impulses.
Today’s Lesson Nervous System and Drug Addiction
E4: Neurotransmitters and Synapses DnlNjuguna ~ DAIS.
The Physiology and epigenetics of Methamphetamine Thomas Crawford Thomas Jefferson Classical Academy Avondale NC.
Synaptic Transmission How a neuron communicates with another neuron and the effects of drugs on this process. Types of Neurotransmitters.
NERVOUS SYSTEM The message must get through…. Functions Control and coordinate functions of the body Respond to internal and external stimuli.
Unit 5: Sensation, Perception and States of Consciousness
Central Nervous System Stimulants Constricted Blood Vessels Constricted Blood Vessels Increased Pulse Increased Pulse Increased Blood Pressure Increased.
Neurotransmitters Information in this presentation taken from UCCP Content.
Neurotransmitters Are Your Friends
Chapter Four Psychopharmacology.
Drugs and the Nervous System. Drugs Drug – any substance, other than food, that changes the structure or function of the body. all drugs whether legal.
Unit 3 – Neurobiology and Communication
Stimulants - I: Cocaine
The Nervous System & Neurons Chapter 7 Click pic.
What is a neurotransmitter? Chemicals secreted by neurons Stimulated action potential in adjacent neurons Two types of responses: Excitatory Inhibitory.
Chapter 9: States of Consciousness
Psychology 304: Brain and Behaviour Lecture 15
Chapter 9 Understanding Drugs and Medicines. Drugs of abuse – ( for example: cocaine, nicotine, alcohol and marijuana) change the way the brain works.
 Target the Limbic System (Emotions & Primary reward circuit)  Primary Neurotransmitter is Dopamine. (Normally rewards natural behavior-Evolutionary.
Neurotransmitters  Neurotransmitters sit in the terminal branch while waiting for Action Potential  Once Action Potential occurs, the vesicles open and.
Neurons & the Nervous System Chapter 2: The Brain and Behavior.
Drug Use Health II October 2014 Health II October 2014.
The Nervous System-Part II
NEUROTRANSMITTERS THE MESSENGERS OF NERVE CELLS.
The Nervous System-Part II Neurotransmitters, Drugs and Disease of the Brain.
How Do Drugs Affect Synapses? BY RUI XIAO. Psychoactive Drugs  Psychoactive drugs are chemical substances that can alter brain functions and result in.
Neurotransmitters.
Thinking About Psychology: The Science of Mind and Behavior
Neurobiological Theories of Mental Disorders
Price of Drug Addiction
MODULE 3: Neural and Hormonal Systems
Drugs.
Drugs affecting Neurotransmission
Drugs and Near Death Experiences
Neurotransmitters.
The Good, the Bad and the Ugly
Biological Psychology
Neurotransmitters What is a neurotransmitter?
Drugs and Consciousness
What are the current guidelines for healthy living
Neurotransmitters.
Neurotransmitters and the Synapse
How do we differentiate intensity? Ex hot vs warm?
Neurobiology/ Behavior Lesson
Presentation transcript:

Hallucinogenic Plants Professor Suleiman Olimat

What is addiction? (Latin) addictus---attached to something, positive. Today alcoholism called a “brain disease”or bad habit or sin. Leading assumption of the text: Addiction is the key, not the substance or behavior Addiction defined by researchers as “a bad habit,” “a brain disease,” “helplessness,” “a problem of motivation”

Definitions Addiction—pattern of compulsive use. Has physical, psychological, social aspects. Emphasis on process rather than outcome.

The Diagnostic and Statistical Manual of Mental Disorders (DSM ( Changes to DSM in new edition: no longer dichotomy between abuse and dependence Addiction now the preferred term instead of dependence. Addiction now seen as a continuum. Substance use disorder requires 2 of following: toleranceinability to stop toleranceinability to stop withdrawal problemsexcessive spending or effort withdrawal problemsexcessive spending or effort use more than intended to obtain use more than intended to obtain reduced involvement continued use reduced involvement continued use

The question is often asked: Why would anyone addict to drugs? Research has shown that people generally take drugs to either feel good (i.e., sensation seekers, or anyone wanting to experiment with feeling high or feeling different) or to feel better (i.e., self-medicators, or individuals who take drugs in an attempt to cope with difficult problems or situations, including stress, trauma, and/or to lessen anxiety, fears, depression, or hopelessness).

Why people taking Drugs?

From being an addict to being a poet.

Stimulant A stimulant is a drug which increases the activity of the sympathetic nervous system and produces a sense of euphoria or awakeness. Stimulants can be used as recreational drugs, or therapeutically to increase alertness. They are also used and sometimes abused to boost endurance and productivity as well as to suppress appetite.

Dependence Physical Dependence: Withdrawal of drug produces physical symptoms. Body needs the drug for normal physiological function Psychological Dependence: Cravings for a drug, overcome by the desire to have a drug.

Central Nervous System The brain and spinal column The body’s control system…also responsible for sensory perception, thought, mood, memory, etc. Synapses within the CNS rely on a number of different neurotransmitters

CNS Neurotranmitters Catecholamines (norepinephrine, epinephrine, dopamine) Acetylcholine Tryptamines (serotonin) GABA (= ϒ -aminobutyric acid) Endorphins Cannabinoids Histimine Glutamate Glycine

Norepinephrine primary catecholamine, released from the adrenal medulla and postganglionic sympathetic neurons removed from synapses through re-uptake metabolized in the presynaptic terminal by endogenous monoamine oxidase (MAO) and catechol-O-methyltransferase (COMT)

Norepinephrine Drugs that increase norepinephrine concentrations in CNS synapses can be used to treat depression Norepinephrine antagonists can be used to treat psychosis and mania

Dopamine is associated with A. Learning B. Hunger C. Stress D. Pleasure

Norepinephrine Enhancer: Cocaine from Erythroxylum coca blocks nerve terminal membrane transport system, preventing re-uptake of norepinephrine (and other catecholamines) results in an accumulation of norepinephrine at receptors

Cocaine initially Decreases the amount of dopamine present in a synapse. Destroys the receptors on a post-synaptic neuron. Dissolves the plasma membrane of neurons in the brain. Increases the amount of dopamine present in a synapse.

Neuron AnimationNeuron Animation: tion/neuron-main.html

How Cocaine WorksHow Cocaine Works animation: /coca-anim-main.htmlwww.pbs.org/wnet/closetohome/animation /coca-anim-main.html

Norepinephrine Enhancer: Peganum harmala

Peganum harmala One of the active compounds in harmal is harmaline Harmaline is used as a sedative and to treat depression Mechanism of action: Harmaline inhibits MAO-A, which leads to an increased availability of neurotransmitters (norepinephrine, serotonin)

Ayahuasca Ayahuasca is a medicinal tea prepared from Banisteriopsis Caapi, a jungle vine, found in the tropical regions of South America. Ayahuasca has a rich legacy of associated traditions, myths and therapies.

B. caapi

Chemistry Beta-Carboline alkaloids as in Peganum harmala

Effect People who have consumed ayahuasca report having spiritual revelations regarding their purpose on earth, the true nature of the universe as well as deep insight into how to be the best person they possibly can, His viewed by many as a spiritual awakening and what is often described as a rebirth. In addition, it is often reported that individuals can gain access to higher spiritual dimensions and make contact with various spiritual or extra dimensional beings who can act as guides or healers.spiritualuniverserebirthdimensions