Amygdala

Amygdala (28)
Hippocampus (80)

Synopsis: Neuroscience: Nervous system: Limbic system: Amygdala:

and the data provides the first direct evidence that it is true. hey could also see how the specific cells in the cortex were connected to the amygdala a structure in the brain that is involved in emotion

#Scientists use light to make mice asocial California Institute of technology rightoriginal Studyposted by Jessica Stoller-Conrad-Caltech on September 19 2014scientists have discovered antagonistic neuron populations in the mouse amygdala that control

Autism has also been linked to dysfunction of the amygdala a brain structure involved in processing emotions.

but distinct populations of neurons in the amygdala a part of the brain that is involved in innate social behaviors.

The researchers focused on the workings of the brain's amygdala a structure that is important for humans social and emotional behavior.

if the amygdala is capable of responding to a complex social signal like a face's trustworthiness without that signal reaching perceptual awareness.

To gauge this part of the brain's role in making such assessments the study s authors conducted a pair of experiments in which they monitored the activity of subjects amygdala

In the first experiment the researchers examined amygdala activity in response to three levels of a face's trustworthiness:

In the second experiment they assessed amygdala activity in response to a fully continuous spectrum of trustworthiness.

Across the two experiments the researchers found that specific regions inside the amygdala exhibited activity tracking how untrustworthy a face appeared

and other regions inside the amygdala exhibited activity tracking the overall strength of the trustworthiness signal

(whether untrustworthy or trustworthy) even though subjects could not consciously see any of the faces. hese findings provide evidence that the amygdala's processing of social cues in the absence of awareness may be more extensive than previously understoodobserves Freeman who as lead author conducted the study as a faculty member at Dartmouth

such as the amygdala, but produce characteristic patterns throughout a number of brain regions, says Vladimir Cherkassky, senior research programmer in the psychology department.

This is the first time cannabinoid receptors have been identified in the central nucleus of the amygdala in a mouse model,

It might fundamentally change our understanding of cellular communication in the amygdala. i

#Millennials see financial institutions as irrelevant Scratch polled 10,000 millennials to find out which industry was most prime for disruption.

and the amygdala plays a critical role in associating emotion with memory. This circuit could offer a target for new drugs to help treat conditions such as posttraumatic stress disorder the researchers say In the future one may be able to develop methods that help people to remember positive memories more strongly than negative ones says Susumu Tonegawa the Picower

while emotions linked to that memory are found in the amygdala. Previous research has shown that many aspects of memory including emotional associations are malleable.

but labeled memory cells in the basolateral amygdala a region involved in processing emotions. This time they could not induce a switch by reactivating those cells the mice continued to behave as they had been conditioned

This suggests that emotional associations also called valences are encoded somewhere in the neural circuitry that connects the dentate gyrus to the amygdala the researchers say.

and fear-encoding cells in the amygdala but that connection can be weakened later on as new connections are formed between the hippocampus

and amygdala cells that encode positive associations. That plasticity of the connection between the hippocampus and the amygdala plays a crucial role in the switching of the valence of the memory Tonegawa says.

These results indicate that while dentate gyrus cells are neutral with respect to emotion individual amygdala cells are precommitted to encode fear

or reward memory. The researchers are now trying to discover molecular signatures of these two types of amygdala cells.

They are also investigating whether reactivating pleasant memories has any effect on depression in hopes of identifying new targets for drugs to treat depression and posttraumatic stress disorder.

Cellular analysis of the cerebellum, amygdala and hippocampus three brain regions known to be altered in autism was vaccinated similar in

Fear is generated in the amygdala part of the brain involved in emotional memories. But it can be repressed by signals in another region,

the ventromedial prefrontal cortex. he idea would be to decode a signal in the amygdala showing overactivity,

Indeed, they observed that connectivity was enhanced between memory engram cells in the fear memory-holding amygdala and context memory-holding hippocampus of amnestic mice,

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