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Lecture 18

NEUR 2P37 Lecture Notes - Lecture 18: Gyrus, Premotor Cortex, Autism SpectrumPremium

8 pages99 viewsWinter 2017

Department
Neuroscience
Course Code
NEUR 2P37
Professor
nickslothouber
Lecture
18

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NEUR2P37
Brain and Behaviour II
Friday, March 24th, 2017
Social Cognition
Social Perception
What’s i a fae
Easier to notice/remember difference between members of a familiar group than it is
for members of a diff or unfamiliar group
There is a significant amount of non-verbal information communicated by the face
The fusiform face area and the ventral visual stream are important for recognizing faces
The amygdala and insula are important for quickly recognizing social emotional cues on
faces
Some of the areas in the face-processing network
Areas involved in face processing include the fusiform face area, frontal eye fields,
ventrolateral prefrontal cortex, anterior insula, temporal lobe, supplementary eye field,
and amygdala
Do I Look Like a Liar to You?
We make judgments about other people based on seeing their face for only 100m/sec
Faces can be classified by the factors of trustworthiness and dominance
Where a face falls on these scales can be manipulated by changing the features of the
face
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^ Personality judgments from facial shape
People can make quick judgments about a persons personality from the shape of the
persons face, even when wearing a neutral expression
These personality judgments can be summarized by 2 main factors:
1. Trustworthiness
2. Dominance
Social Knowledge and the Temporal Lobe
Social knowledge, such as recognizing celebrities, activates the anterior temporal pole
A part of the right superior anterior temporal lobe is active when considering qualities
such as polite or hoorale.
The temporal pole is functionally connected to the basolateral amygdala.
The temporal pole is located at the anterior end of the temporal lobe, and lesions to this
area are associated w/ forgetting information about famous people, such as those
pictured here
Social Signals and the Superior Temporal Sulcus
Social intentions are communicated by gaze direction, posture, and vocalizations
The superior temporal sulcus (STS) is sensitive to gaze direction in others
STS is also active for other social cues, such as posture, facial movements, and
contagious yawning
STS is active when recognizing a voice
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The superior temporal sulcus is important for detecting and interpreting social cues
Intentionality is represented in the superior temporal sulcus
Areas in the superior temporal sulcus activate more for voice than for nonvoice sounds,
and more for witnessing purposeful rather than purposeless actions
Social Thinking: Theory of Mind
What is Theory of Mind?
It is the ability to perceive and understand the mental states of others, and to recognize
that they differ from our own
1st order theory of the mind is the ability to predict the thoughts of another person
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