This neural ring identified by scientists makes you stimulated "scare a jump"

This neural ring identified by scientists makes you stimulated "scare a jump"

  Jun, November 8, learned from China University of Science and Technology, and Professor Xiongwei, the Department of Life Science and Medical and Medicine and First Affiliated Hospital, and the study revealed the cochlear nuclear – brain bridge tail side mesh nuclei-spinal cord motor neurons this nerve ring The road to regulate the reflex behavior. The research results were published on November 4th in "Nature · Communication." For all mammals including people, sudden sound or tactile stimuli can induce a consciousness of the body in milliseconds, which is what we often say "is scared."

  The blow reflection is present in the entire life cycle of mammals. Its generation can cause more muscle contraction to move in an emergency, protecting the location of the easily injured, such as the eyes and the back neck, and also for a subsequent further defense reaction, such as the original Frozen, escape, avoid it, etc.

The degree of thriver can indicate an anxiety state of the body, and its abnormal is closely related to mental illness and panic diseases such as trauma. Although the thrush is an important instinctive defense, the basic neural loop that controls the reflection reflection is unclear.

  The topic group first passed C-FOS dyeing and recorded in body electrophysiological records and foundation fiber optic fiber records. When the sound-induced blow reflection, glutamate in the brain-shaped ribbed core of the brain stem was active.

Subsequently, the researchers use light-generated and chemical genetic means to find that specific activation of RTTG glutamate can observe that mice have bounce performance, neck and hind limbs can also be recorded into myocytonic activity, which is typical. Syndrove reflex behavior. Specific inhibitory RTTG glutamic acid neurons can inhibit mice to generate a blown reflection, and will not affect movement coordination, gait, perception, and other behaviors.

  Subsequently, the topic group conducted a viral tracing on the upstream of the RTTG nuclear group, found that glutamate in RTTG can directly accept excitatory projections from cochlear nucleus. Further tracking experiment results show that RTTG glutamate can be directly projected to the spinal cord motion neuron, and finally complete control of neck and limb muscles.

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