ch 15 - temporal lobe Flashcards
The temporal lobe includes: ___, ___, ____.
neocortex, limbic cortex, and olfactory cortex
Subcortical structures of the tempiral lobe include: ___, ____.
amygdala and hippocampus
does the temporal lobe connect other regions of the brain?
yes
Subcortical meaning
structures located beneath the cerebral cortex in the brain. Often deeper regions of the brain associated with memory, emotion and movement
Internal stucture of the temporal lobe
Fusiform gyrus
Fusiform gyrus
internal stucture of the temporal lobe
used in ventral stream visual processing espcially for faces
lesions can lead to facial recognitipn loss
FACIAL RECOGNITiON
EMOTION RESPONSE
Insula and Insular damage
involved in taste
involved in vestibular sensations
involved in viceral sensations
Insular damage can lead to PTSD and chronic pain
Insula is part of the internal structure of the temporal lobe. near the fusiform gyrus
Theory of Temporal lobe function
temporal lobe analyses sensory info
a. auditory input
b. rocognizes visual objects
c. stores long term memories
d. processes olfactory input
Helps us shift from one sense to the other depending on whats important
Cross-modal matching
processing several factors like body language, tone of voice, and facial expressions to determine meaning
invloves superior temporal sulcus
Where is sensory input combined and stored?
structures of the medial temporal lobe
Superiror Temporal Sulcus (STS)
detect biological motion of releavance to the species
(SOCAIL AWARENESS)
this all depends on multimodal integration which means to be able to pick up on several environmental ques to understand things
(facial expressions)
(tone of voice)
(body language)
Neural Pathways for face Processing
Visual cortex (V1/V2) —–> Superior Temporal Sulcus (STS)
^changeable pathway for expressions
Visual cortex (V1/V2) —–> Fusiform Face Area (FFA)
^invariant or consitant pathwayfor gender and identity
Neuronal sensitivity to movement direction
Superior Temporal Sulcus (STS) neurons respoded more stronly when people walk towards approaching
Visual processing in the Area TE (sub-section of the inferor temporal cortex)
involving working visual memory
different combinations of size, colour, texture of objects, activated different neurons in this region
new experiences can alter this region
t/f
do lesions on right temporal lobe affect facial recognition more than lesions on the left side?
T
Thatcher illusion
inverted faces (eyes and mouth) had to distingush from real until they are flipped back to normal
limbic system
emotions and memory
what seperates the temporal lobe from the frontal lobe +pariental lobe
lateral sulcus; sylvian fissure
Primary Auditory Cortex
determines
1. frequency
2. pitch
3. localizing sound
comes from cranial nerve 8 (VIII)
Auditory Association Cortex
making sense of the sounds: creating understanding
“im fine”
- pitch
- freq
- amp
- location
compair with past memories to recgonize the meaning of the sound stimulus/interpretation
Wernickes Area
recieves info from visual + auditory areas to comprehend
and the processes the sound and sight and sends to Broca’s Area in the frontal lobe via the Acuate Fasiculus which is involved in speech
TLDR
auditory+visual —> wernickes —(A.F)—-> Broca’s Area —> verbal response
“are you listening to me” sound stimulus + visual cues
-mad-
“yea i was listening”
Wernickes Aphasia
-fluent speech
-makes no sense
comprehension is no longer intact
Broca’s Aphasia
speech impediment
Primary Olfactory Cortex and Association cortex
Pyriform connects the entorhinal and perirhinal and amygdala to memory and assocciation
when you step in dookie, you smell and get mad
