Introuctions / Terminology Flashcards
One technique used to study the brain
One technique used to study the brain in relation to behavior is magnetic resonance imaging (MRI). MRI allows researchers to examine the structure and activity of the brain non-invasively by utilizing strong magnetic fields and radio waves. It provides detailed images of the brain’s anatomy and can also capture changes in brain activity.
Maguire 2000
Localization
Localization of brain function refers to the theory that a given function is localized in specific areas of the brain. This essentially means that certain brain structures or brain regions are the genesis of particular behaviors; localization recognizes that the brain operates through interconnected networks, where multiple regions collaborate to support complex cognitive functions.
Maguire 2000
Neuroplasticity
Neuroplasticity refers to the brain’s remarkable ability to change and reorganize its structure and function in response to various experiences, learning, and environmental factors. It involves the formation of new neural connections, the strengthening of existing ones, and the pruning of unused synapses. Neuroplasticity plays a fundamental role in shaping brain development, adapting to injuries, and optimizing cognitive functions throughout life.
maguiree 2000
Neural Networks
Neural networks are networks of interconnected neurons in the brain that facilitate communication and information processing. The formation of neural networks involves a dynamic process influenced by environmental inputs and experiences. During development and throughout life, synaptic pruning eliminates unused synapses while strengthening connections between active neurons. This process refines the neural networks, optimizing the efficiency of information processing.
Maguire 2000
Neural pruning
Neural pruning is a vital process in the development and optimization of the brain’s neural connections. This process involves the selective elimination of unused synapses and the strengthening of active connections. Neural pruning allows the brain to refine and optimize neural circuitry, enhance efficiency and allocation of resources, specialization, and allows for the adaptation and shaping of the brain based on individual experiences.
Maguire 2000
Neurotransmitter
Neurotransmitters are the body’s chemical messengers which transmit information from one neuron to another in the brain and body. They are of great research interest to psychologists and neuroscientists because they can turn on or turn off neurons which is what gives rise to human behavior like mood, motivation, memory and learning. Serotonin is a key neurotransmitter in the brain associated with many key cognitive functions like emotion, perception, appetite, sleep and memory.
Crocket et al 2010
Role antagonist
Antagonist molecules play a crucial role in reducing the effects of neurotransmitters by blocking receptor sites on the postsynaptic neuron, thereby diminishing the neurotransmitter’s impact. Citalopram is an example of a selective serotonin reuptake inhibitor, which means it acts as an antagonist: citalopram work by blocking the reuptake of serotonin, thereby increasing serotonin levels in the synaptic cleft and prolonging its effects. By doing so, citalopram enhances the availability and activity of serotonin in the brain, which can have various effects on mood, emotion, and behavior.
Crocket et al 2010
Inhibitory or excitatory synapses
Neurotransmitters that compel a neuron to activate are referred to as excitatory, as they excite or stimulate the postsynaptic neuron to fire; Neurotransmitters that ‘turn off’ a neuron or reduce its likelihood of firing are referred to as inhibitory because they serve to inhibit or prevent the postsynaptic receiving neuron from firing . However importantly, some neurotransmitters, such as Serotonin, can be both excitatory and inhibitory depending on the neural network which they are interacting with.
Crocket et al 2010
use of one research method in one study of the brain and behavior. Revisa creo q hay algo mal
In the field of brain and behavior research, various research methods are utilized to gain insights into the complex relationship between brain functioning and behavior. One prominent research method is a repeated-measures double-blind laboratory experiment, which allows researchers to carefully control variables and investigate cause-effect relationships. This method involves exposing participants to different conditions and measuring their responses.
Crocket et al 2010
Hormone
Hormones are chemical messengers released from endocrine glands that influence the nervous system to regulate various physiological and behavioral processes in humans.
There are 50 different hormones in the human body and are all collectively responsible for a variety of communication purposes and functions. The effect of hormones on human behavior can be profound, shaping our emotions, motivations, and social interactions. One hormone of interest is oxytocin, often referred to as the “love hormone,” known for its role in social bonding and trust. Oxytocin is produced in the hypothalamus and secreted by the pituitary gland.
Baumgartner et al 2008
Pheromones
Pheromones are chemical messengers that are emitted into the environment from the body where they can then activate specific physiological or behavioral responses in other individuals of the same species. They play a crucial role in communication and social interactions among animals, including humans.
Cutler, Friedmann, and McCoy (1998).
Role of one gene
Genes are segments of DNA that contain instructions for the development, functioning, and behavior of organisms. They play a crucial role in shaping various aspects of human behavior, including personality traits, cognitive abilities, and susceptibility to certain disorders. One behavior that has been extensively studied in relation to genetics is major depressive disorder (MDD).
Kendler et al 2006 in major depressive disorder
Genetic similarities
Genetic similarities, particularly in terms of heritability, play a crucial role in facilitating psychologists’ study of the relationship between genes and behavior. Heritability refers to the extent to which genetic variation contributes to the variation in a specific trait within a population. By examining individuals with genetic similarities, such as monozygotic twins who share virtually identical DNA, psychologists can isolate the influence of genetic factors from environmental factors, allowing for a deeper understanding of the genetic basis of behavior. One study that exemplifies the utilization of genetic similarities and heritability in investigating the relationship between genes and behavior is the research conducted by
Kendler et al. (2006) (MDD).
Kinship studies or twin studies
Kinship studies and twin studies are essential research methods utilized in the study of the inheritance of behavior. Heritability, defined as the extent to which the variation in a behavioral trait within a population is attributable to genetic differences, serves as a key concept in these investigations. Kinship studies examine the similarities in behavioral traits among individuals who share different degrees of genetic relatedness, while twin studies specifically focus on comparing monozygotic (identical) and dizygotic (fraternal) twins to estimate the heritability of behavioral traits.
Kendler et al. (2006) - Twin
One research method in one study of genes and behavior
In the field of genes and behavior research, different research methods are employed to explore the influence of genetic factors on various aspects of human behavior. One such method is interviews, which allows researchers to gather detailed information directly from participants. In the study conducted by Kendler et al. (2006), the researchers aimed to examine the role of genetics in major depressive disorder (MDD) by utilizing interviews as a research method.
In Kendler et al.’s study, interviews were conducted with approximately 15,000 complete twin pairs listed in the national Swedish Twin Registry. Trained interviewers carried out telephone interviews between March 1998 and January 2003 using a structured protocol.