Too little dopamine Having too little dopamine in some parts of the brain can lead to Incorrect Question 12 0/5 pts Too little dopamine in the brain is associated with symptoms of schizophrenia. Since dopamine is involved in a variety of brain functions, low extracellular levels of this neurotransmitter can result in a variety of unwanted symptoms. Furthermore, dopamine is crucial for impulse control, and imbalances can contribute to the impulsivity often seen in ADHD. Jul 10, 2023 · To best understand the connection between dopamine and ADHD, it is important to know about dopamine transporter density (DTD). Apr 22, 2024 · (Image from Everyday Health)Author: Whitney ElaineEditors: Rayaan Dhar and Riyaa Sri RamanathanThe most noticeable sign of Major Depressive Disorder (MDD) is a severe and prolonged low mood, profound sadness, or a sense of hopelessness. Too much Acetylcholine. May 28, 2024 · Why is it considered too simplistic to say that disorders like depression are caused by too little serotonin or that schizophrenia is caused by too much dopamine? It is too simplistic because not everyone who has too much dopamine or too little serotonin develops a disease, and because factors other than neurotransmitters influence those diseases. Study with Quizlet and memorize flashcards containing terms like Autonomic ganglia provide a degree of independence from the CNS by integrating motor impulses before they are relayed to visceral organs. Dopamine receptors have been studied using a wide range of radioligands. Low levels of dopamine lead to a lack of motivation in general—if your levels of dopamine get super low, you might not even be motivated to leave your bed or eat food. Oct 12, 2020 · One of the many important roles of dopamine is to use sensory information to motivate a response, whether that response is aversion or pleasure. Positive symptoms vs. D) Alzheimer's disease. D. C) anxiety. However, over the year … Study with Quizlet and memorize flashcards containing terms like The neurotransmitter acetylcholine, Too little dopamine in the brain is associated with symptoms of, Evidence suggest that the addictiveness of some drugs, including cocaine and nicotine, is related to increases in the activity of which of the following neurotransmitters? and more. Too much dopamine; too little dopamine D. Factors Affecting Dopamine Levels and Brain Fog: Life’s Little Influencers May 9, 2023 · There are several potential causes of excess dopamine in the brain. Excitatory. Too much dopamine can result in intense psychotic anxiety, inappropriate thinking process and even psychosis. Then L-dopa undergoes another change, as enzymes turn it into dopamine. Jun 14, 2024 · Too much dopamine, on the other hand, can make your child feel energized and euphoric. Fox has Parkinson's disease. Your child’s brain makes dopamine too little dopamine. fracture of vertebrae, dislocations, or birth injuries Jun 14, 2024 · Too much or too little dopamine may cause schizophrenia symptoms like hallucinations, delusions, and lack of motivation. This makes more dopamine available to more neurons in your brain. natural selection evolution survival of the fittest all of these options, Michael J. In fact, some areas of the brain, particularly the prefrontal cortex, may actually have too little dopamine activity. If it releases a lot of dopamine, you will be motivated to repeat it over and over again. This medication works by regulating dopamine and sometimes serotonin. Restless Legs Syndrome (RLS) is a dopamine-dependent disorder characterized by a strong urge to move. Norepinephrine is made from nerve cells in the brainstem area of your brain and in an area near your spinal cord. This action was controlled by your _____. Mar 23, 2022 · Dopamine deficiency means you have a low level of the neurotransmitter dopamine. Oct 18, 2024 · When there’s too much or too little dopamine, problems can start to arise. With too little dopamine, sensory signals that are normally painless could become painful. Dopamine, Dopamine Receptors and Catechol-Related Enzymes DA, or 4-(2-aminoethyl)-1,2-benzenediol, is one of the main neurotransmitters in the mammalian nervous system. In the central nervous system, it is produced and released by the so-called dopaminergic neurons, which are found in different brain areas but are especially abundant in the May 19, 2023 · Dopamine reuptake inhibitors are drugs that block dopamine from being reabsorbed by nerve cells. Drug use: Certain drugs, such as cocaine and amphetamines, can increase dopamine levels in the brain. ” Dopamine’s role in the brain is far more varied and complicated for this Apr 5, 2019 · What happens if I have too much or too little dopamine? Some diseases or problems are caused by a lack or excess of dopamine. Too much dopamine can lead to hyperactivity, impulsivity, and risk-taking, while too little dopamine may result in depression, fatigue, and lack of motivation. This hypothesis has been challenged over the past 10 years, according to a 2017 review. Which of the following neurotransmitters is implicated in Alzheimer's disease? Aug 4, 2024 · In ADHD, disruptions in dopamine signaling can lead to difficulties in sustaining attention and resisting distractions. Symptoms Of Low Dopamine. How Do Dopamine Partial Agonists Work? Dopamine partial agonists work by Too little dopamine can lead to depression or Parkinson’s; Too much may result in conditions like schizophrenia; This shows how crucial maintaining healthy brain chemistry really is. Oct 18, 2024 · While a little excitement is good for the soul, too much can leave our dopamine receptors overwhelmed and exhausted. If too few dopamine molecules are released, Parkinson's disease can develop, while an excess can So my understanding of this is poor but I gather that in schizophrenia dopamine is too high in some parts of the brain and too low in others. Dopamine imbalances are also related Mar 23, 2022 · Dopamine reuptake inhibitors are drugs that prevent dopamine from re-entering and being reabsorbed by the nerve cell that released it. Understanding the Balance: Too Much vs. , D1 and D5) receptors. Alzheimer's disease. HOW TO INCREASE DOPAMINE Diagnosing dopamine Apr 14, 2018 · But it’s certainly not simply a matter of “too little dopamine (or dopamine signaling) in the brains of ADHDers. Too little Dopamine. The brain is made up of billions of cells called neurons. e. In phase II adrenal fatigue, stress hormones begin to plummet. Too Much Dopamine Sep 17, 2024 · If the activity releases too little dopamine, you will be less motivated. This is likely related to. Excessive dopamine is associated with schizophrenia, while too little dopamine is associated with Parkinson's disease. Because of this, it can increase dopamine levels in the brain. Too little dopamine, too much dopamine C. C. negative symptoms . Nov 2, 2024 · High dopamine symptoms include anxiety, excessive energy, insomnia, and hallucinations. The connection between ADHD and dopamine is a little complicated. 1. Too little dopamine, too much serotonin, When your hand touches a hot stove, you immediately and reflexively pull it away. In psychology, it's linked to feelings of gratification and is implicated in mood disorders, addiction, and certain behaviors when its levels are imbalanced. Too little dopamine is associated with conditions like Parkinson’s disease and depression, while excessive dopamine activity has been linked to schizophrenia and attention deficit hyperactivity disorder (ADHD). Mar 11, 2024 · Too much dopamine is often a result of poor lifestyle choices — too much stress, too little sleep, poor diet, using addictive substances, and/or engaging in risky behaviors. Jan 23, 2024 · In other words, dopamine plays a role in controlling our sense of reality, and too much or too little can cause delusions and hallucinations. Many medical conditions are linked to low levels of dopamine, including Parkinson’s disease, restless legs syndrome, depression, schizophrenia and attention deficit hyperactivity disorder (ADHD). “Dopamine is a key transmitter in the brain that controls movement,” explains Alessandro Di Rocco, MD, a neurologist and movement disorder specialist at Lenox Hill Hospital in New York City. This can cause uncontrollable movements. Sep 12, 2024 · While some areas of the brain may have too much dopamine, others may have too little, leading to a range of symptoms. To this end, the idea that we should seek to massively boost dopamine Strauss syndrome minimal brain injury hyperactive child syndrome executive functions, Current thought suggests that ADHD results from which of the following: too much dopamine in the frontal cortex too little dopamine in the basal ganglia region of the brain deficiency or dysfunction of the neurotransmitter dopamine in the regions of the bran Spinal nerve injury may result from: a. Low levels of dopamine can lead to symptoms such as feelings of worthlessness or guilt, decreased motivation, and loss of interest in previously enjoyable activities, which What Is Dopamine? Dopamine is a chemical in the brain that helps regulate movement, behavior, emotion, motivation, and pleasure. Learn more about the symptoms. If norepinephrine is too high, it can also cause manic episodes. Sometimes, this mood can come off as irritability. Dopamine is a neurotransmitter that plays a crucial role in various brain functions. cortisol. Having too much or too little of either neurotransmitter can cause psychological and physical symptoms. fracture of vertebrae, dislocations, or birth injuries b. Aug 31, 2016 · However, serious health problems can arise if too little or too much dopamine is being produced. It may also impact other brain functions that trigger many mental health conditions. So, for example, if a schizophrenic patient is given a particular drug that’s used to treat schizophrenia, it’s a very good drug by the way, it’s in the group of drugs known as phenothiazines, then what happens is it dries up their dopamine. Don't know? Terms in this set (13) Acetylcholine. Nov 27, 2020 · When dopamine levels are too high, it leads to many of the negative symptoms of schizophrenia (apathy, lack of emotion, lack of motivation, poor social function, and poor cognition). Having too much dopamine is linked to being aggressive and having trouble controlling your impulses. . It’s deficiency can be rectified naturally by eating foods rich in tyrosine as dopamine synthesis requires the amino acid tyrosine. Aug 22, 2024 · Maintaining balanced dopamine levels is essential for overall health and well-being. B) Parkinson's disease. Good Dopamine. brainstem. May 31, 2022 · Dopamine is a neurotransmitter linked to schizophrenia. A. She also suffers from anxiety and depression. Too much Serotonin. Too much serotonin; too much dopamine C. Parkinson's disease results from: too little serotonin too much dopamine too little dopamine too much As a neurotransmitter, norepinephrine is made from dopamine. You constantly have to drag yourself out of bed every day. If someone with an actual psychotic disorder needed abilify they'd use 15-30 mg generally where as someome with OCD may use 2-5. Mike suffers from Parkinson's disease and experiences tremors and loss of motor control. Too little dopamine; too much serotonin, Split-brain is the term used to describe Jun 16, 2021 · For people with Parkinson’s disease, dopamine levels are too low. , An impulse travels through the structures of the neuron in the following order:, _____________ are the part of the neuron where chemicals called neurotransmitters are released. Too little dopamine will often look like laziness, apathy or lack of motivation. Low dopamine levels are linked with certain health conditions, such as Parkinson’s disease or depression. When there is too much dopamine, the “gate” for excitatory inputs from glutamate neurons to post-synaptic PFC cells shuts down, while too little dopamine allows interference between different inputs (13, 19 Mar 21, 2024 · The reality is that dopamine is a key molecule across a host of pathways, but too much or too little are both unhelpful. It’s a bit like a city with traffic jams in some areas and deserted streets in others. On the other hand, excess dopamine activity has been linked to conditions such as schizophrenia, which is closely linked with excess receptor activity for this neurotransmitter . Now that we’ve identified some of the causes, let’s explore how dopamine overstimulation might be manifesting in your life. The majority of studies have used ligands specific for D2‐type (i. Low dopamine levels in the brain can prompt symptoms like sadness, anxiety, and lack of motivation. Too much dopamine, too little dopamine D. May 19, 2024 · Dopamine deficiency, in which too little dopamine is available or processed, can cause problematic changes in mood, memory, sleep, social behavior, and the many other processes that this neurotransmitter helps regulate. First, the amino acid tyrosine is converted into another amino acid, called L-dopa. - Too little dopamine; too much dopamine - Too little dopamine; too much serotonin too little dopamine; too much dopamine The branch of psychology that studies the ways in which natural selection and adaptation can explain behavior and mental processes is _____________. Schizophrenia was soon identified as a hyperdopaminergic disorder, and antipsychotics proved to be reasonably effective in controlling positive symptoms. It could also result in memory loss, mood swings, sleep problems, and trouble concentrating. As the dopamine starts to fall, signs and symptoms of Parkinson’s disease will begin to reveal themselves. Having too much or too little dopamine in certain parts of the brain has been linked to mental illnesses such as depression, schizophrenia, psychosis, ADHD, and addiction. Dec 15, 2023 · The correct answer is option b. It’s also possible to experience anhedonia, which makes it difficult to feel and enjoy pleasure. Sep 26, 2019 · Because both too much and too little dopamine can be harmful, however, it is important not to self-medicate or self-diagnose a dopamine-related issue. When President John F. Dopamine reuptake inhibitors are used to treat depression and narcolepsy, and to overcome addictions such as smoking, overeating and binge eating. Sep 24, 2019 · Dopamine dysregulation could mean that the brain is producing too little or too much dopamine. Not all sources of dopamine are equal. Jun 18, 2024 · If you have too little dopamine, you get too tired, unmotivated and thereby unhappy. Find step-by-step Psychology solutions and the answer to the textbook question Too little dopamine in the brain is associated with symptoms of: a) Schizophrenia b) Anxiety c) Alzheimer's disease d) Parkinson's disease. Jun 1, 2022 · So what are the tell-tale signs that you have too little dopamine? Here are the significant low dopamine symptoms to help you determine if you have supply issues of this dope molecule. Feb 21, 2024 · Dopamine and serotonin play key roles in mood, depression, and appetite. Jan 23, 2025 · Study with Quizlet and memorize flashcards containing terms like __________ is associated with Parkinson's disease, whereas ___________ is associated with certain forms of schizophrenia. B. So, how does dopamine function, and where is it used? Well, before we answer that, let’s talk a little bit about neurotransmitters. What are the potential effects of heavy marijuana usage? hallucinations, anxiety, depression, body image distortion, and other psychotic symptoms Jun 1, 2022 · So what are the tell-tale signs that you have too little dopamine? Here are the significant low dopamine symptoms to help you determine if you have supply issues of this dope molecule. Sep 13, 2023 · Levodopa test: Levodopa (L-Dopa) is the precursor to dopamine and a drug that can boost dopamine levels. Jun 24, 2023 · Dopamine is a neurotransmitter that helps regulate many functions including movement, emotional response, and the brain’s reward system. It’s like trying to drink from a fire hose instead of a water fountain – overwhelming rather than refreshing. When we have too little dopamine, we tend to feel bored, unmotivated, or depressed. " Understanding whether you should be worried about your dopamine levels — as well as the science-backed ways to support production — requires going beyond the hype and exploring the evidence. The evidence for this theory comes from many sources, including post-mortem studies that have imbalances of dopamine as well as its metabolites in schizophrenic patients. Apr 18, 2024 · Neurons in the region at the base of the brain produce dopamine in a two-step process. 2. If a person displays improved symptoms after taking L-Dopa, it indicates a diagnosis of PD. hippocampus. Too little dopamine can lead to a range of symptoms that can significantly impact daily life, while excessive dopamine has been linked to conditions such as schizophrenia and mania. Generally speaking, having too little is more of an issue than having too much. 1) Too Little Production: It is possible to have too little or too much dopamine production. a drug overdose a. You might also feel really tired or lethargic. Oct 4, 2024 · The brain chemical dopamine is the common denominator linking these two conditions. Addressing these habits and behaviors responsibly is the key to changing excessive levels of dopamine in a lasting, meaningful way. Having a higher density of dopamine transporters in the brain results in lowered dopamine levels in the brain Jan 30, 2025 · If we have too little dopamine, we may struggle to get things done and can experience symptoms that can be commonly correlated to certain mental health conditions—such as depression or ADHD. These drugs may also be used to help people overcome addictions. If we have too much dopamine, we may become stressed, harbor excess energy and develop other complications. It's also involved in motor function, mood, and even our decision making. and more. Or the individual going through significant depression might not be able to take pleasure in activities that Apr 1, 2015 · While maintaining sufficient dopamine levels is beneficial for mental health and physical functioning, too much dopamine can create dysfunction. Such medications may treat depression, binge eating disorder, and narcolepsy. For most people, dopamine in the brain can be safely classed as a happiness chemical. Physical effects include muscle issues and slower movements. Effects Apr 15, 2022 · Too little dopamine in other regions may result in negative symptoms. PET: dopamine receptors. “If you have too little dopamine as in Parkinson’s disease, you Select one: a. too much glutamate c. Symptoms of low dopamine may include: Study with Quizlet and memorize flashcards containing terms like The term _____ refers to the evolutionary concept that those with adaptive genetic traits will live and reproduce. too little norepinephrine b. Jan 17, 2025 · "Neurotransmitters, including dopamine, are tightly regulated by multiple mechanisms, ensuring there's neither too much nor too little produced. If you have too little dopamine in your system, try something like our TUNE IN supplement. Striking the right balance of dopamine is essential. Also in at least some parts the tonic dopamine being too high is what causes phasic dopamine to be too low and this results in a kind of flatlining that to me sounds totally compatible with anhedonia Nov 5, 2019 · Dopamine is strongly associated with pleasure and reward. Oct 13, 2023 · Dopamine is a very interesting neurotransmitter that plays many roles throughout the human body. thalamus. too little dopamine Emma has recently started to suffer from migraine headaches and seizures. Too much serotonin, too much dopamine B. Learn more about how dopamine levels affect schizophrenia symptoms, treatments, and causes. Kennedy was hit by a sniper's bullet in the back of his head, he died almost instantly, because the bullet destroyed the part of his brain which controls breathing, heartbeat, and other vital body functions. Finding a middle ground helps maintain emotional stability and focus. Nov 20, 2022 · To combat the effects of too little dopamine, it is tempting to rely on stimuli that significantly boost it, such as alcohol, listening to your favorite music, or taking a pre-workout before hitting the gym. The dopamine hypothesis of psychosis states that either too much or too little dopamine in the brain can trigger psychotic symptoms. Treatments are available to manage these conditions. What happens if I have too much or too little dopamine? Having too much or too little dopamine in some parts of the brain are linked to some mental illnesses including depression, schizophrenia and psychosis. This is often due to the level of stress the individual is under. It can sometimes create an environment where there’s too much or too little dopamine in the body. So if you have too little dopamine itll increase it, if you have too much, itll reduce it. Too Little Dopamine. Cognitive problems may arise, affecting memory and organization. Treatment Options for Low Dopamine Levels. Jul 21, 2019 · That is why dopamine (either too much or too little in different parts of the brain) is implicated in a range of neurological and psychiatric conditions as distinct as Parkinson’s Disease, Too little dopamine in the brain is associated with symptoms of: Parkinson's disease. On the other hand, too little dopamine is linked to Parkinson’s disease, depression, and attention deficit disorders. Too little dopamine; too much dopamine B. too much acetylcholine d. " With little dopamine, you can lose the motivation to do anything. Nigrostriatal Pathway - a dopamine pathway that originates in the substantia nigra and travels to different parts of the basal ganglia, including the putamen and too little dopamine Which of the following does NOT represent a significant current study dedicated to providing new insights into the brain? a project exploring how the size of certain neural structures can predict criminality May 27, 2022 · Dopamine levels fluctuate during a migraine attack, which may explain some of your symptoms. Norepinephrine is the stress hormone that controls attention and response actions. Jul 9, 2024 · Too much or too little dopamine causes problems with impulsive behavior, sleep, and movement. Learn more. Credit: Pixabay. If you’re dealing with low dopamine levels, there’s no need to despair. And this leads to signs of the disease such as: Hallucinations and delusions; Disorganized thinking and speech; Emotional flatness or lack of motivation; Cognitive difficulties, such as impaired memory and decision-making Jan 28, 2024 · Dopamine is a neurotransmitter in the brain associated with pleasure, reward, motivation, and motor control. Jan 5, 2025 · Too little dopamine, and we lose our ability to know what even the word “tomorrow” means. 3. But again, fret not. Too little dopamine causes the stiff movements that are the hallmark of Parkinson's disease. But abnormal Oct 9, 2024 · I strongly believe some of you may share the same root cause as me—mutations in the BH4 pathway (GCH1 is not the only gene involved)—which results in too little dopamine, norepinephrine, serotonin, and glutamate, along with increased oxidative and nitrosative stress. amygdala. Explanation: Excessive dopamine is to Schizophrenia as too little dopamine is to Parkinson's disease. Dopamine levels can fluctuate throughout your life. So, getting the body to produce more dopamine is not really the answer. , D2, D3 and D4) dopamine receptors, although several studies have also examined D1‐type (i. Too much dopamine has been associated with schizophrenia (most likely too many dopamine receptors) Dopamine Too little is associated with some forms of depression as well as the muscular rigidity and tremors found in Parkinson's disease. Trust me, it’s not all sunshine and rainbows. Parkinson's disease. When the Highs Become Lows: Signs and Symptoms. Too little Serotonin. Too much dopamine can lead to feelings of euphoria or mania. Aug 22, 2024 · Imbalances in dopamine levels can lead to various disorders. Low dopamine, or dopamine deficiency, can be caused by a variety of factors, including conditions Oct 31, 2023 · Levodopa acts like dopamine. Having either too much or too little of it can be an issue. The objective of this study was to evalulate blood levels of dopamine and other catecholamines and blood D2-subtype dopamine receptors (D2Rs) in RLS. Too little dopamine makes you less motivated or excited about things. Cheap Dopamine vs. In phase I, alarm response to stress, we produce more dopamine and other catecholamines. The highest levels of dopamine May 5, 2023 · Too much or too little dopamine can cause schizophrenia and Parkinson’s. Too little dopamine in the brain is associated with symptoms of. To this end, the idea that we should seek to massively boost dopamine Aug 22, 2024 · Too much dopamine activity is associated with conditions such as schizophrenia and mania in bipolar disorder, characterized by hallucinations, delusions, and excessive energy. 23 Mar 2022 Abstract Objective/Background. Striatum The original dopamine hypothesis refers to the view that schizophrenia is at least partially caused by (A) too much dopamine in the brain (B) too much dopamine in the spinal cord (C) too little dopamine in the brain (D) too little dopamine in the spinal cord (E) too little dopamine in the peripheral nervous system Sep 11, 2024 · The dopamine hypothesis of schizophrenia is a theory that dopamine levels may affect certain symptoms of the condition. B) Morphine. According to the gating hypothesis, dopamine might modulate cognition due to its interaction with other neurotransmitters in the PFC. Is ADHD caused by too much dopamine? This is a common misconception. Treating a dopamine deficiency Mar 21, 2024 · The reality is that dopamine is a key molecule across a host of pathways, but too much or too little are both unhelpful. In addition, too little dopamine can cause depression, apathy, and lack of motivation. Some of the most common causes include: Genetics: Some people may be predisposed to having higher levels of dopamine in the brain due to genetic factors. Patients with AD produce too much beta amyloid, while those with PD produce too little dopamine. Sep 30, 2024 · Too much dopamine can be just as problematic as too little, potentially leading to racing thoughts and difficulty focusing. High Dopamine Levels Symptoms: List of Possibilities Understand that many of the symptoms associated with high dopamine can also occur with high or low levels of other neurotransmitters. Low dopamine levels are associated with brain fog, mood swings, and muscle spasms. anxiety. Nov 26, 2022 · Too little dopamine can contribute to cognition issues such as attention deficit hyperactivity disorder (ADHD), an inability to focus, depression, mood swings, schizophrenia, and psychosis. When the body is producing more dopamine (or you are taking dopamine enhancing drugs) and the receptors aren’t receiving it properly, a build-up of dopamine happens in the brain, causing nervous tics and, yes – you guessed it – RLS. You don't have "the drive. How does dopamine make you happy? Dopamine sends chemical messages in your brain to let you know Apr 2, 2015 · Although too much dopamine can create problems, too little dopamine may be even more problematic. Researchers reason why some people have ADHD is that they have an increased amount of dopamine transporters. Learn about symptoms of too much or too little dopamine and how Sep 30, 2024 · But it’s not as simple as too much dopamine everywhere. True or False?, The part of the brain that is overactive in post traumatic stress disorder is the A. 4. Norepinephrine is part of your sympathetic nervous system, which is part of your body’s emergency response system to danger — the “fight-or-flight” response. Jun 12, 2023 · Dopamine deficiency has links to several health conditions, including Parkinson's disease and depression. too little dopamine in the basal ganglia c. Aug 22, 2024 · Too little dopamine is associated with conditions like Parkinson’s disease, characterized by motor control problems and mood disturbances. Nov 13, 2023 · What happens if you have too little dopamine? Dopamine deficiency can affect your physical and mental health. Jun 28, 2021 · Too much for your own good: Excessive dopamine damages neurons and contributes to Parkinson's disease An Editorial Highlight for “ Enhanced tyrosine hydroxylase activity induces oxidative stress, causes accumulation of autotoxic catecholamine metabolites, and augments amphetamine effects in vivo ” Study with Quizlet and memorize flashcards containing terms like Although the left and right hemispheres of the brain are specialized, they are normally in close communication through the _____. Too little dopamine in the brain is associated with symptoms of: A) schizophrenia. , Nerve tracts other than the Antipsychotics represent the first effective therapy for schizophrenia, with their benefits linked to dopamine D2 blockade. - behavioral genetics - environmental psychology - evolutionary psychology Study with Quizlet and memorize flashcards containing terms like The neurotransmitter acetylcholine:, Too little dopamine in the brain is associated with symptoms of:, Evidence suggests that the addictiveness of some drugs, including cocaine and nicotine, is related to increases in the activity of which of the following neurotransmitters? and more. excess acetylcholine in synapses d. aqoux wwrz ozmlz odfcqn ueodvw ezzhmzmx zhv rrd uxvdh kfpnozc mpjky zygta lazprro azsavy trv