Grade 11, Unit 1 (Topic 1,2,3) Flashcards
Who was the researcher that believed in Monism?
Claudius Galen, 130-210 CE
Who was the researcher that believed in Dualism?
Rene Descartes, 1619
What is Monism?
Monism is the belief proposed by Claudius Galen from 130-210 CE that stated the mind controls (is apart of) the body due to how humans have the ability to form judgements based on their existence and that mental processes can be purely identified with physical processes in the CNS.
What is Dualism?
Dualism is the belief proposed by Rene Descartes in 1619 that stated the body and mind are separate entities as the relationship between the body and mind is unidirectional as the mind controls the body but the body can influence the otherwise rational mind.
Define trephination
Trephination is a surgical intervention where a hole is drilled, incised or scraped into the skull using simple surgical tools and has been used to treat intracranial diseases, epileptic seizures, migraines and mental disorders by relieving pressure by exposing dura matter underneath the skull without causing damage to underlying blood vessels, meninges and brain.
Explain Phrenology
The study of Phrenology proposed by Franz Gall in 1796 suggested that personality was linked to brain structures. Examination of the lumps, bumps and indentations of the skull could determine a person’s character, intelligence and a range of other area”s responsible for a variety of behaviours and functions. Phrenology however was discredited and labelled pseudoscience is the 1840’s due to the lack of experimental evidence to support such claims.
How many brain organs did Franz Gall believe existed?
27 organs
Discuss the contributions to psychology by Pierre Flourens?
In 1867, Pierre Flourens proposed the conclusion that the degree of any disorder seemed to depend on the quintuplet of cerebral tissue removed, regardless of its location. Founder of Experimental brain science, localised living area of the brain in animals and would observe effects on behaviour and cognition. He found that main functions were responsible for different functions.
Explain what a PET scan is
Positron Emission Tomography is a neuro-imaging technique that reveals the functioning and activity of organs and tissues within the brain. This technique involves injecting a radioactive dye that contain radioactive tracers that provide a 3D image of the activity within the brain. This imagine technique shows the concentration and location of activity through colour.
Explain what an MRI scan is
Magnetic Resonance Imaging is a neuro-imaging technique that shows highly detailed, images. They do not show the activity or functioning of the area only photographs of anatomical structure. The magnetic field causes the alignment and movement of hydrogen protons present within the body which emits signals. The signals are received by antenna and generated into photographs.
Explain what a FMRI scan is
Functioning magnetic resonance imaging measures brain activity by dealing with changes associated with blood flow. A FMRI Scan,
Is similar to a MRI scan however shows the function and activity of areas of the brain instead of a photograph. A MRI scans image anatomical structure whereas FMRI scans metabolic function within the anatomical structure.
Explain what an EEG scan is
An EEG refers to electroencephalogram and measures electrical activity within the brain via electrodes applied to the scalp. It can be used to diagnose epilepsy, brain haemorrhage, strokes, Alzheimer’s disease and disorders of the nervous system.
What is the role of the Temporal lobe?
The temporal lobe is involved in primary auditory perception and is responsible for interpreting auditory sensory information such as hearing, language recognition and holds the primary auditory cortex.
What is the role of the Frontal Lobe?
The frontal lobe is generally where higher executive functions take place including problem solving, decision making, emotional regulation, planning and reasoning occur.
What is the role of the Occipital Lobe.
The occipital lobe holds the primary visual cortex and integrates visual sensory Information to interpret depth, location, facial and object recognition, distance and size.
What is the role of the Parietal Lobe?
The parietal lobe is responsible for integrating sensory information such as touch, pressure, temperature and pain and also Spatial awareness sensation.
Explain the human nervous system and it’s sub branches.
The nervous system is a highly complex system that coordinates an organisms movements as result of transmitting impulses from sensory Neuron’s, inter Neuron’s and motor Neuron’s.
Nervous system —> CNS (brain and spinal cord) & PNS (—> somatic and automatic system, automatic —> into parasympathetic and sympathetic systems)
What are the two roles of the peripheral NS?
- Sensory nerves conveys impulses towards CNS. They send sensations that are detected by sensory Nerves.
- Motor neurones send impulses away from CNS to the body’s effector organs.
Eg: hotplate Reflex arc
What is the role of the somatic system
The somatic system controls voluntary movements of skeletal muscles (striated ans striped). Motor Neuron’s communicate messages from the CNS particular muscles.
Eg. Walking, running (physical movements)
What is the role of the autonatic system?
The automatic nervous systems control voluntary movements of non-skeletal muscles (visceral and smooth). It carries out basic bodily functions such as breathing, heartbeat and digestion.
Explain the parasympathetic nervous system
The parasympathetic nervous system controls the ‘freeze’ response which is activated one when is aware they cannot outrun or fight a threatening stimulus. Additionally it is responsible for homeostasis and calming the body after stress reactions.
Eg. Slows heartbeat, and lowers blood pressure
Explain the role of the sympathetic nervous system
The sympathetic nervous system becomes active when the organism is threatening and prepares the body for the ‘flight or fight’ response. It initiated arousal.
Eg. Pupils dilate and blood pressure increases.
What are glial cells and their functions
Glial cells are supportive cells In the CNS and PNS that like unlike neurones, they do not conduct electrical impulses and their function is to surround Neuron’s and hold them in place; to provide nutrients and oxygen for neurones; to insulate Neuron’s and remove dead neurones.
What are afferent and efferent pathways
Afferent pathways are receptor cells to CNS
Efferent pathways are CNS to effectors
What regions of the brain are included in the forebrain?
Thalamus, hypothalamus, cerebrum
What regions of the brain are included in the hindbrain?
Pons, medulla oblongata, cerebellum
What is the midbrain
Uppermost brain stem
What does the pons, medulla oblongata & cerebellum do
Where are they on the brain
Pons - controls eye movement, swallowing, sleep, respiration, and other bodily actions. (under midbrain)
Medulla oblongata - regulated breathing, heat rate, digestion (left and lower than pons)
Cerebellum - controls voluntary movement: balance, posture, coordination and speech (under brain)
What does the midbrain do
Serves function in motor movement, particularly the eye, in auditory and visual processing
What does the thalamus, hypothalamus and cerebrum do?
Thalamus - relays all sensory information to the cerebrum cortex
Sensory information is detected the bodies surface and is communicated to the thalamus which receives it as a sensation. Then it conveys this sensation to the cerebrum cortex which determined whether its pressure, pain, touch or temp.
Hypothalamus
-maintains homeostasis, regulates sleep, produces releasing or inhibiting hormones and reliable for fighting, fleeing, feeding and fornication.
Cerebrum
- connects all parts of the brain
- motor movements, emotions, memory, intelligence and speech
Explain the role of frontal lobe
The frontal lobe is generally where higher cognitive thinking takes place including problem solving, speech, decision making, emotional regulation, planning and reasoning.
Explain the role of the parietal lobe
The parietal lobe integrates sensory information such as touch, taste, pressure, pain and temperature and spatial awareness sensation.