Lectures Flashcards
why is electrode on the cheek
eyes are basically magnets –> changing electrical fields –> messing with EEG
Different types of waves
delta <4 hz = slow wave sleep/babies
theta 4-8 = meditation
alpha 10hz = relaxed state
beta 14-30 = movement in motor cortex & thinking
gamma >30 = coordination between neurons
EEG analysis pipeline
frequency filter
deal with eye and heart artefacts
cut epochs around event markers
apply baseline correction
group epochs
acverage epochs to get ERPs
compare ERPS
stat analysis
ERP
event related potential, the average of a group of epochs
P300
effect found when seeing the playing card you were instructed to remember
pyramidal neurons
organised in columns along the curvature of the brain, its their activity that is picked up by EEG
priming experiments
stimuli are similar in one way and you start probing how similar the brain thinks they are
n150
basic visual processing
n250
orthographic overlap / reconciliation of visual difference
p325
checking whether word is part of lexicon or not
ventral processing stream
visual stimuli are processed from the dorsal to the ventral side of the brain
Foreign language effect
reduced emotional resonance in second language, processed less automatically
construction integration model by kintsch
different levels of integration: surface, representation, situation model
simple view of reading:
text decoding + language comprehension = text comprehension
research on comprehension outcomes after reading:
lower grades: listening > reading
higher grades: listening < reading
results think aloud study by PHD student
no effect of modality on average number of responses, comprehension processes were comparable
Speech act literalism
there is a link between sentence types and speech act types
research on whether linguistic information is enough
images help in comprehending when looking at single words
results from last lecture
-we use mental simulations to comprehend language
- we simulate objects, their shape, orientation & colour
