Chemical synapse cells, known as a gap junction. At gap junctions, cells approach within about 3.5 nm of each other, rather than the 20 to 40 nm distance that separates cells at chemical synapses. As opposed to chemical synapses, the postsynaptic potential in electrical synapses is not caused by the opening of ion channels by chemical transmitters, but rather by direct electrical coupling between both neurons. Electrical synapses are faster than chemical synapses. Electrical synapses are found throughout the nervous system, including in the retina, the reticular nucleus of the thalamus, the neocortex, and in the hippocampus. While chemical synapses are found
Office of the Privacy Commissioner for Personal Data the Data Subject. The ordinance was passed in 1995. Data subject refers to : Examples of data subject protected by this ordinance include name, address, phone number, identity card number, photo, medical record and employment records. The data user, who collects, holds, or process this data is liable for any unlawful or wrongful use of this data. In 2010, it was reported that Octopus Card issuer has made HK$44 million in the past 4 1/2 years by selling cardholder data. This was disclosed in a special hearing conducted by the personal data privacy commissioner. Octopus Holdings chief executive Prudence Chan