Pieres section practice questions Flashcards
a within- subject t test examines
whether on average there is a significant difference between the 2 conditions for each participant
for a single sample t-test, the number of degrees of freedom is (where n is the number of participants)
n-1
the standard error of the mean (SEM) is given by the following equation
SEM= sd/sqrt(n), where sd= standard deviation, n= number of participants
The EEG signals are caused primarily by currents in the
apical dendrites of pyramidal neurons
limitations of EEG include
the EEG signal is biased by signals generated in the superficial layers of the cerebral cortex
in the well known 10-20 system electrodes A1 and A2 are placed
on the observers ears
in EEG one can compare the potential difference
two electrodes, between an electrode and a ground electrode, between an electrode and the average voltage of all the electrodes
what is not an artefact
EEC artefact
Due to a brain operation to cure his epilepsy
HM could recall events prior to his operation but was severely impaired in forming new long term memories
The first demonstrations of TMS by Sheffield group used TMS to
stimulate the motor cortex
Phineas Gage received damage to his
frontal cortex
considering two of the language centres of the brain
wernikes area is responsible for speech comprehension
In TMS butterfly coils are used because
their effect on the brain is more localized
In MEG, SQUIDS
measure magnetic fields
evoked recordings occur
in MEG, EEG and TMS
