biopsychology
- Created by: sophiemai
- Created on: 16-04-19 09:32
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- biopsy
- neuron structure
- transmit messages chemically and electrically. three types;
- relay neuron; connects sensory & motor neuron
- motor neuron; connects CNS to effector
- sensory neuron from PNS to CNS
- transmit messages chemically and electrically. three types;
- synaptic transmission
- either exitory or inhbitory neuro transmitters depend on the reaction on the next neuron
- axon, synaptic cleft, dendrite, pre synaptic terminal, post synaptic receptor, vescicles
- nervous system
- 2 sub systems; central nervous system CNS = brain and spine peripheral nervous system PNS - transmitts too and from CNS
- PNS split into 2 further sub sections; autonomic nervous system = controlling vital functions such as breathing & somatic nervous system = controls muscel movements
- the ANS is also split into 2 parts; parasympathic branch & sympethetic branch
- PNS split into 2 further sub sections; autonomic nervous system = controlling vital functions such as breathing & somatic nervous system = controls muscel movements
- differences; hormones vs electrical slower vs faster widespread vs direct
- endocrine system
- working alongside the nervous system -
- adernal gland - releases adreniline & nora adrenaline - flight and fight responce
- pituitory gland- master gland controlling release from other glands
- working alongside the nervous system -
- endocrine system
- 2 sub systems; central nervous system CNS = brain and spine peripheral nervous system PNS - transmitts too and from CNS
- endocrine system
- working alongside the nervous system -
- adernal gland - releases adreniline & nora adrenaline - flight and fight responce
- pituitory gland- master gland controlling release from other glands
- working alongside the nervous system -
- localisation
- separate parts of the brain for different tasks
- motor area- frontal lobe- controlling volentary movement on opp part of body - damage = possible loss of fine motor skills
- somato sensory- parital lobe - sensory skin info
- visual are - occipital lobe - visual info from opp eye
- auditory area - temporal lobe - speech info - damage= partial hearing loss
- language areas; left side
- brocas area; frontal lobe - speech production - damage = slow and non fluent speech
- wernickles area - temporal lobe - language comp - damage = fluent but nonence
- eval; 1- supporting CW 2- supporting PG 3- but plasticity
- separate parts of the brain for different tasks
- hemispheric lateralisation
- 2 halves - split brain studies cut the corpus callusom stopping comunication between halves - couldnt name things on left no lang center on right
- eval; 1- metholodology 2- issues with genralising 3- over stated differences
- plasticity
- brain can recover after damage - brain develops with learning
- axonal sprouting, recruitment of homoglobous, reformation of blood vessels
- eval; 1- taxi drier support 2- med students 3- brain damage support 4- not genralisable
- brain can recover after damage - brain develops with learning
- ways on investigating the brain
- fMRI
- magnetic feild, lights up wth blood flow
- eval; 1- live activity 2- supports localisation 3- hard to interpret 4- 5 sec delay
- EEGs & ERPs
- electrons on the scalp measuring responces to stimulus , erps - more specific reponce
- eval; 1- cheaper & less complex than fMRI's 2- poor spatial resolution
- post mortem examinations
- brains examined after death, attempting to corolate abnormalites
- eval; 1- proved broca & wernickles area 2- special consent necessary 3- neuronal changes after death
- brains examined after death, attempting to corolate abnormalites
- fMRI
- biological rhythms
- circdian rhythms
- 24 hours long, sleep awake cycle - controlled by SCN and pineal gland , body temp - increases before waking up and decreases at night
- eval; 1- supporting evidence 2- supporting animals 3- blind people disagree 4- siamese disagree
- ultradian rhythms
- less than 24 hours, stages of sleep REM - rapid eye movement & NREM
- 5 stages; 1-4 = NREM 5 = REM. 1-2 = light sleep 3-4 = deep sleep with growth hormone released 5= REM (dreaming)
- eval; 1- supporting evidence 2- contradictory evidence 3- mice study support
- less than 24 hours, stages of sleep REM - rapid eye movement & NREM
- infradian rhythms
- longer than 24 hours, menstral cycle - 28 days , oestrogen & progesterone +blood, seasonal effective disorder (SAD) - yearly cycle lower energy melatonin levels difference
- eval; 1- externl factors 2- real life applications
- circdian rhythms
- factors effecting biological rhythms
- exogenous zeitbergers
- external events; light &social cues
- light, can reset SCN supressing melatonin production
- social cues, eat sleep social activities
- eval; 1- blind man support 2- supporting evidence
- external events; light &social cues
- endogenous pacemakers
- internal factors; superchiasmatic nucleus & pineal gland
- SCN - main EP, gathers light info and rests dorsal SCN
- pineal gland - releases melatonin in responce to SCN
- eval; 1- supporting evidence 2- supporting animals 3- siamese twins disagree 4- deterministic
- internal factors; superchiasmatic nucleus & pineal gland
- exogenous zeitbergers
- neuron structure
- ANS & endocrince system together; becomes sypathetic, stimulating adrenal medula, releasing adrenalin, then para sympathetic state
- adrenline effects;
- direct effects; increased heart rate, blood flow, constrits blood flow
- general effects; pepared for fight or flight, more oxygen
- nervous system
- 2 sub systems; central nervous system CNS = brain and spine peripheral nervous system PNS - transmitts too and from CNS
- PNS split into 2 further sub sections; autonomic nervous system = controlling vital functions such as breathing & somatic nervous system = controls muscel movements
- the ANS is also split into 2 parts; parasympathic branch & sympethetic branch
- PNS split into 2 further sub sections; autonomic nervous system = controlling vital functions such as breathing & somatic nervous system = controls muscel movements
- differences; hormones vs electrical slower vs faster widespread vs direct
- 2 sub systems; central nervous system CNS = brain and spine peripheral nervous system PNS - transmitts too and from CNS
- adrenline effects;
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