Please enable JavaScript.
Coggle requires JavaScript to display documents.
Psychological disorders in society (Biology) - Coggle Diagram
Psychological disorders in society (Biology)
Lecture 1 - information processing
Our body is made of up small sub-systems which are specialised to a specific function - these are all controlled by the nervous system
Physical stimuli - receptors - analysis - decision - action
Lecture 3 - Neurones and the CNS
Neurones
Function - transimmsion of electrical impulses to other neurones
Excitation pathway - the chemical fluid becomes charged (from an input via the dendrites), leading to neurotransmitters being released from the end of one neurone to reach another through the terminal button via synapses
Motor neurone disease - excitation of neurones is impaired
NS
CNS
Peripheral NS
Sensory/motor
Autonomic
Sympathetic/parasynpathetic
The brain
Parts of the brain
Hindbrain (back)
Medulla (HR) and cerebellum (co-ordination)
Midbrain
Function - control reticular functioning, such as sleeping/waking
Forebrain
Hypothalamus - survival behaviours, such as eating
Cortex - higher cognitive functioning, such as reasoning
Lobes
Frontal, parietal, temporal and occipital
Specialised to a function
If an area is lesioned, then other areas will help
Corpus collosum connects the two heispheres
Phrenology - personality can be determined from brain structure
Lecture 4 - Senses
Smell
Biology - receptors in the
nasal cavity
cause activation in the
olfactory bulb
Taste
Biology - receptors on the
tongue/mouth
cause activation via the
brain stem
, to the
primary gustatory region
where we experience the taste
COVID-19 - the beta version stops our smell and taste
Touch
Biology - receptors lie
under the dead dermis
(for protection) and are activated to feel touch
DIstribution of receptors - there is an
uneven distribution
throughout the body, making
some areas more sensitive
to touch, such as our hands
Hearing
Sound waves = pressure waves (measured in hertz)
Biological process - pressure waves hit the eardrum, causing vibrations of the oval window, styrup and cochlea. Liquid in the cochlea moves hair cells, activating the excitatory pathway to the auditory nerve. This then reaches the auditory cortexes
Function - allows us to be social
Vision
Biological process - photons hit the retina, leading to the optic nerve, optic chasm and then the optic tract. This then leads to the hypothalamus (to determine day/night) and then the lateral geniculate nucleus then the visual cortex. Vision is experienced in the primary visual cortexes in the occipital lobe
Rods and cones
Rods - dim light
Cones - colour and work better in bright light
Cortical blindness - completely blind
Blindsight - blind people can still navigate obsticals, suggesting that visual process still occurs even when vision doesn't