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Everett M. "Ev" Rogers (March 6, 1931 – October 21, 2004) was an American communication theorist and sociologist, who originated the diffusion of innovations theory and introduced the term early adopter.
John O'Keefe, FRS FMedSci (born November 18, 1939) is an American-British neuroscientist, psychologist and a professor at the Sainsbury Wellcome Centre for Neural Circuits and Behaviour and the Research Department of Cell and Developmental Biology at University College London.
The hippocampus (pl.: hippocampi; via Latin from Greek ἱππόκαμπος, 'seahorse') is a major component of the brain of humans and other vertebrates.The hippocampus is part of the limbic system, and plays important roles in the consolidation of information from short-term memory to long-term memory, and in spatial memory that enables navigation.
Human communication was initiated with the origin of speech approximately 100,000 BCE. [1] Symbols were developed about 30,000 years ago. The imperfection of speech allowed easier dissemination of ideas and eventually resulted in the creation of new forms of communication, improving both the range at which people could communicate and the longevity of the information.
Instead, they support a new theory saying that the hippocampus has a more general function encoding continuous variables, and location just happens to be one of those variables. [17] This fits in with the idea that the hippocampus has a predictive function. [18] [19] Grid cells and place cells work together to determine the position of the animal
The integration of this information in the hippocampus makes the hippocampus a practical location for cognitive mapping, which necessarily involves combining information about an object's location and its other features. [19] O'Keefe and Nadel were the first to outline a relationship between the hippocampus and cognitive mapping. [8]
The hippocampus has been shown to become active in semantic and episodic memory. [70] The effects of Alzheimer's disease are seen in the episodic part of explicit memory. This can lead to problems with communication. A study was conducted where Alzheimer's patients were asked to name a variety of objects from different periods.
Influenced by Innis's communications theories, historian Marshall Poe proposed a theory on the genesis of new media. He proposed that new media are "pulled" into existence by organized interests after inventors have already developed the technology, or prototypes of the technology, necessary to support the media.