Neurochemistry is the study of chemicals, including neurotransmitters and other molecules such as psychopharmaceuticals and neuropeptides, that control and influence the physiology of the nervous system.
What are neurotransmitters in psychology?
A neurotransmitter is a chemical messenger that carries, boosts, and balances signals between neurons (also known as nerve cells) and target cells throughout the body. These target cells may be in glands, muscles, or other neurons.
What is meant by genotype psychology?
The term genotype refers to the specific genetic makeup, unique genetic constitution, or hereditary “blueprint” of an organism. An individual’s genotype is his or her genetic identity. The term allele refers to the specific string of base pairs (i.e., the genotype) at a particular genetic locus. …
What are the main assumptions of the biological approach?
Key assumptions of the biological approach:
- There is a direct correlation between brain activity and cognition.
- Biochemical imbalances can affect behaviour.
- Brain physiology can affect behaviour.
- Behaviour can be inherited (as it is determined by genetic information)
What is a reuptake in psychology?
n. the process by which neurotransmitter molecules that have been released at a synapse are reabsorbed by the presynaptic neuron that released them. Reuptake is performed by transporter proteins in the presynaptic membrane. ADVERTISEMENT.
What are the 7 major neurotransmitters?
Fortunately, the seven “small molecule” neurotransmitters (acetylcholine, dopamine, gamma-aminobutyric acid (GABA), glutamate, histamine, norepinephrine, and serotonin) do the majority of the work.
What is a genotype simple definition?
Genotype: The genetic constitution (genome) of a cell, an individual, or an organism. The genotype is distinct from the expressed features, or phenotype, of the cell, individual, or organism. The genotype of a person is that person’s genetic makeup. It can pertain to all genes or to a specific gene.
What are the 3 types of genotypes?
There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).
What is the difference between genotype and phenotype psychology?
“Genotype” is an organism’s full hereditary information, even if not expressed. “Phenotype” is an organism’s actual observed properties, such as morphology, development, or behavior. This distinction is fundamental in the study of inheritance of traits and their evolution.
What is the main focus of biological psychology?
The field focuses on the relationship between psychological processes and the underlying physiological, genetic, and molecular mechanisms, and it thus aims to uncover the biological basis of behavior, emotion, motivation, perception of internal and external stimuli, sleep, learning and memory, etc.
What is an example of biological psychology?
The biological approach believes that most behavior is inherited and has an adaptive (or evolutionary) function. For example, in the weeks immediately after the birth of a child, levels of testosterone in fathers drop by more than 30 percent.
What are the strengths of the biological approach?
- It is very scientific because the experiments used are measurable, objective and can be repeated to test for reliability.
- It is deterministic because it increases the likelihood of being able to treat people with abnormal behaviour and provides explanations about the causes of behaviour.
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What is reuptake and why is it important?
Reuptake is necessary for normal synaptic physiology because it allows for the recycling of neurotransmitters and regulates the level of neurotransmitter present in the synapse, thereby controlling how long a signal resulting from neurotransmitter release lasts.
What causes reuptake?
The serotonin either travels across that space and attaches to receptors on the surface of nearby nerves or it attaches to receptors on the surface of the nerve that produced it, to be taken up by the nerve, recycled, and released again. This process is referred to as reuptake.
What do antagonists do psychology?
An antagonist is a chemical or drug that binds to receptors in the brain and prevents an agonist from having a reaction. … Antagonists attach to the receptors in the brain and block the effect of agonists (which are chemicals that stimulate receptors and cause a response).