lesson 1 Flashcards
synonyms for below
- inferior
- sub
- hypo
- infra
synonyms for fibre bundles or neural pathways in the CNS
- tract
- fasciculus
- funiculus
- lemniscus
solitary tract- ascending interoceptive (brain stem)
- round fasciculus
- solitary fasciculus
- solitary bundle
structure
- tells about the morphology or forms of things
- CT scans may show brain structure and indicate a tumour that may be causing some observable behaviour
function
- tells us about activity
- an EEG may show abnormal brain activity that is indicative of a seizure
invasive
puncture or incision of the skin and denoting procedures or tests that require an insertion on an instrument or material that is foreign into the body
invasive measuring examples
- single cell recording requires electrodes to be implanted into the brain - highly invasive
- PET scans require the injection of radioactive isotopes - somewhat invasive
- EEG requires the placement of electrodes on the external scalp - non-invasive
high or low spatial resolution
how precisely can you determine where something is or occurred - more precise, higher the SR
to how small a region in space can you resolve 2 locations - smaller the region, higher the SR
spatial resolution
in space
high or low spatial resolution - WHERE
EEG can provide information about brain activity localised to several centimetres - low SR
fMRI can be provide information at the mm level - high SR
single cell recording provide information at the micro level - super high SR
high or low temporal resolution
how precisely can you determine when something happened- more precise, higher the TR
- to how small an interval of time can you resolve 2 events - smaller the interval, higher the TR
high or low temporal resolution - WHEN
- fMRI can tell you when something occurred within seconds - low TR
- EEG can tell you when something occurred within ms - high TR
- single cell recording can tell you when something occurred within microseconds (or faster) - super high TR
correlation
a reliable relationship between two things
causes for correlations
- one thing causes the other to happen
- both result from a common underlying cause
- the relationship is just a coincidence
brain activity and behaviour - correlation
fMRI BUT just because activity in a region is correlated with a behaviour does not mean that the activity caused the behaviour
brain activity and behaviour- causation
stimulation that interferes with the behaviour indicated that the affected brain region is necessary to perform the behaviour normally
ways to study the nervous system - behavioural response
- reaction times
- detection thresholds
- stimulus discrimination
psychophysics
the study of the relationship between stimuli (specified in physical terms) and the sensations and perceptions evoked by these stimuli
ways to study the nervous system - physiological response
- startle response
- electrodermal activity (EDA)
- pupilometry
- heart rate (and variability)
- muscle tension
- polygraph
