Evoked potential

Yongxin Zhao’s unique scientific contributions I have developed several enabling tools for optical imaging of biological systems, which are under two main themes: 1. Optogenetic indicators for neuronal activities; 2. Expansion Pathology, a novel imaging strategy for super-resolution imaging of archived clinical samples. For theme 1, I worked on optogenetic indicators for Ca2+ and voltage, two of the most significant types in neuroscience. I tackled the well-known challenge of engineering these…

Hydroelectric energy is made from a turbine that turns falling water into mechanical energy; then that mechanical energy is turned into electric energy. This process helps produce electric energy from the kinetic energy of falling water. How does this process involve chemistry? It first begins with the mechanical energy of the water. Mechanical energy is all the energy that is put upon an object. In the case of the hydroelectric generator, the mechanical energy is made from the position of…

Energy The ability to do something. Kinetic Energy Moving energy exp: a moving car Potential Energy Something that has the ability to power or do something or cause a change; stored energy exp: a battery Mechanical Energy The energy an object contains due to its positioning or movement. Gravitational Potential Energy Something that is in a position where it may fall or rise due to gravity. Elastic Potential Energy Something that has been stretched and has the ability to move when released.…

the cell body by the retrograde transport for degradation and recycling. 2. Can depolarization occur without an action potential being created? Explain An action potential begins when a depolarization increases the membrane voltage so that it crosses a threshold value. 3. If a strong stimuli (suprathreshold) is applied, how is it reflected when we observed an action potential? It can increase the frequency of action…

When a ball drops, why doesn’t it ever come back to the original spot that it was dropped from? That is because the potential energy that it had was being transferred to heat and sound. Energy isn’t being conserved, its being transferred to potential, kinetic, heat, and sound energy. Energy is not completely being destroyed, its just being transferred. We can use Newton's 3 laws to prove this statement. Newton's first law is energy cannot be destroyed nor created, second law which is force =…

I need my brain to know when to move. When playing volleyball, I need to be able to move around in order to get to where the ball had been hit. In order to do this my brain uses neurons to transmit signals to my body that allows me to make quick motions. Sensory neurons send messages from my muscles and sensory organs, like my eyes and ears, to my brain and spinal cord. My brain then processes that message and sends a response back to my muscles via motor neurons. If, for instance, one of my…

Aim: To investigate the changes of velocity and to investigate the acceleration and of the car. Also to investigate to see if the velocity and the angle of the wooden plank would make the severity of the crash increase. Hypothesis: The higher the slope of the wooden plank, the faster the car will go therefore the increase of the severity of the crash. Variables: Independent Variable – The height of the ramp Dependent Variable – Distance that the dummy flies – the velocity of the car Constant…

Abstract Action potentials can be defined as the signals and the pathways sent through the nervous system. They are essential in carrying out various actions that are administered by the brain. This effect of action potentials help us to feel cold, warmth ,use the sensory actions of the eye etc. and the back forth signaling between the brain and the nerve cells helps the brain to carry the right action. Action potentials are housed by neuron structures which are made up of axons and dendrites.…

Abstract: Gravitation Potential Energy: Introduction and Theory: Gravitational potential energy is the potential energy an elevated object has due to the force of gravity. Potential energy is the stored energy an object has dependent upon its position. Near the surface of the Earth, the gravitational acceleration of an object is 9.8m/s^2. There is no uncertainty associated with this value since it has been measured countless times. The factors that affect the gravitational potential energy…

receptor molecules in the postsynaptic membrane. The binding will lead to opening of ion channels in the postsynaptic membrane, meaning that ions will adjust the polarization of the postsynaptic neuron. These events could be enough to begin action potential in the axon hillock (only if the depolarization is sufficient enough, and reaches the verge of the postsynaptic neuron). Than the synaptic transmitter is removed from the synaptic cleft, meaning the transmission is short and precise.…