Introduction to Psychobiology - Part 6 (A Neurotransmitter known as Acetylcholine)
For more information about psychobiology, please check out "Physiology of Behavior," by Neil Carson In this post we will cover a neurotransmitter known as Acetylcholine (ACh) Acetylcholine (ACh) This is thought to be the first discovered neurotransmitter by Otto Loewi (1). To the right a drawing of a rat's brain and its acetylcholine pathway can be seen. ACh can be found in the peripheral nervous system(PNS) and the central nervous system (CNS). In the PNS it is involved with neuromuscular junction (2). This is where an axon reaches a muscle (3). Here the ACh causes EPSPs. This is excitatory postsynaptic potential and it refers to the action that increases the probability of an action potential occuring. On the other hand, IPSPs inhibit postsynaptic potentials (4). In the CNS, ACh in the basal forebrain is involved in perceptual learning and memory. In the Medial Septum, specifically the Hippocampus, ACH is also involved in learning and memory. In the D...