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Unformatted text preview: autonomic response.!
A more detailed version is
processed by the visual cortex
then to the amygdala, and
identiﬁes the stimulus as a snake,
increasing the autonomic
information is relayed to the
(ventromedial) where it is
evaluated for an appropriate
response.! Suggests there are 2 pathways that lead to this fear response in humans. These 2 pathways are important for the combined bodily
response and … in humans. Only need a rough stimulus in order to be startle/excited. The visual stimulus has to be processes through
the eyes > thalamus > visual cortex. In the thalamus, it (the rough approximation) branches out and goes to the amygdala and
bypassing the visual cortex. It could be enough to start a bodily response. At the same time that is happening though, you are still
processing this thing visually (150 ms+) and then goes to PFC in order to make sense out of it. During the time the visual info passes
through the temporal lobe, it can be sent to the amygdala as well. So the amygdala is getting 2 different inputs, one rough
approximation for something coiled on the ground that is going to start a physiological response. And then the one coming the temporal
lobe is going to be sending the amygdala information about what that thing is. Then both will be sent to the PFC. LeDoux, 1994! Pathways involved in a fearful response in humans!
comes in, is
processing by the
make a object
recognition. It is
slow but thorough. High-road!
Quick & dirty!
Goes straight to the amygdala and a very
rough approximation. When you see a coil,
you get a physiological reaction right away.
However, if you recognize it is just coiled
piece of rope, the system will still get a startle
response, but then you will calm down and
the initial response will stop.
The low road from an evolutionary standpoint
gives us a little more time to react.
The OBF is very important in all these in that...
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This note was uploaded on 01/18/2014 for the course PSY 123 taught by Professor Staff during the Fall '11 term at UCSB.
- Fall '11