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1

Post-synaptic vs pre-synaptic inhibition Yes, inhibitory post-synaptic potentials (IPSPs) are always in the context of post-synaptic inhibition, because they are post-synaptic potentials. They occur because of inhibitory neurotransmitters (for example, GABA) are released and bind to post-synaptic receptors, particularly ligand-gated chloride channels. We ...


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This is a more detailed answer about conceptual mechanisms from the same author as AliceD is citing: The first row represents the sensors (for instance photoreceptors) while the second row represents higher order responses (for instance of MT neurons). The latter's response is their resting level response plus the difference of the corresponding channel ...


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There are two types of synapses namely Electrical synapse and Chemical synapse. In electrical synapse there is physical contact between two cells through gap junctions. In chemical synapse there is a small gap between two cells which is termed as synaptic cleft. The presynaptic and postsynaptic membranes at chemical synapses are separated by a synaptic ...


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From this closeup image, you can see there is more than one nerve on each side that is parallel to the spine. Source: imgur.com First, they are the right and left sympathetic trunk that run from the base of the skull to the coccyx. Image source: Earthslab.com Additionally, they could be the right and left long thoracic nerve, which innervate the serratus ...


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The motion after-effect (MAE) is believed to be primarily due to adaptation of direction sensitive cells in the middle temporal area (MT) (Fig. 1.). The directional cells in this area of the cortex are selectively sensitive to motion in one direction. Hence, looking at a waterfall will selectively cause adaptation in those cells tuned to the direction of the ...


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This is a bit of a strange way to plot out these data, I think Figure 3.2 is easier to understand, but basically these are data plotted from early voltage-clamp experiments trying to walk you through how the Hodgkin-Huxley model was developed. They step the voltage to a particular point and look at the current. There are two phases to this current: an early ...


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Relative ion permeabilities determine the equilibrium for a given configuration of ion channels. You can easily understand what is about to happen to the voltage of a cell if you know the permeabilities: if the equilibrium voltage is more positive than the present voltage, then the voltage will increase over time. The rate at which it increases depends on ...


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Imagine what happens inside a fishes mouth after it has eaten an insect or another fish, It's the same if I eat a sardine... the sardine stays stuck in my mouth for a while afterwards. Then if i used my mouth to smell, I would just smell sardines everywhere, literally for an hour. If the fish only used it's mouth to sense the water, it's sense of smell ...


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In addition to olfactory and gustatory, fishes have two more chemoreceptor systems, solitary chemoreceptor cells and free nerve endings (Finger TE 1997). Asking why do they have all these chemorecepor systems is 'little bit' difficult in the light of evolution. But we can definitely look at this question by using some comparative studies. Hence, this answer ...


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