Canli et al. (2000) Flashcards
Give three reasons as to why there may be a link between the amygdala and emotional experiences as shown by studies.
- some people are more responsive to emotional experiences than others
- during scanning people were in an enhanced state of emotion
- the amygdala responds in a dynamic way.
full form of fmri
functional magnetic resonance imagery
explain how fmri works
it is a non-invasive brain scanning, which uses radio waves with a strong magnetic field to make a detailed image of blood flow in the brain.
is an fmri a structural scan or functional scan?
functional
what is an fmri classed as?
a functional scan
full form of BOLD
blood-oxygen-level-dependent signal
what exactly does an fmri do?
It traces the journey of oxygenated blood, as high activity areas receive more oxygenated blood. It maps all of the activity and produces a map of squares called voxels which represent thousands of neurons. pictures are colour coded to show intensity
what do voxels represent in an fmri scan?
thousands of neurons
what was the aim of Canli et al?
to investigate whether an area of the brain called the amygdala is sensitive to different levels of intensity based on subjective emotional experiences. And whether the degree of emotional intensity affects memory recall
who were the participants in Canli et al?
ten right-handed healthy female volunteers
why were females chosen for Canli et al?
females are more likely to report intense emotional experiences.
how many scenes were participants shown in the initial fMRI scan?
96 scenes
what does valence mean?
emotional value
what was the range of scene ratings in Canli et al?
highly negative ( rating 1.17) to neutral ( 5.44) and tranquil (1.97) to highly arousing (7.63)
how long were scenes shown to participants in Canli et al?
2.88 seconds
how long was the interval between scenes in Canli et al?
12.96 seconds
what was the range of ratings participants could give the scenes?
from 0= not emotionally intense at all to 3 = extremely emotionally intense
when were participants given an unexpected recognition test?
three weeks after the scan
how many new scenes were added in the recognition test?
48 new foils
what were the participants told to do in the recognition test?
they had to say wether they had seen each picture before. if they said yes, they were asked if they remembered the scene with certainty (coded as remembered) or less certain ( coded as familiar)