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The perception of an odour is a two-step process. First, there is a physiological process, ie the detection of chemical stimuli (odorous molecules) by olfactory receptors in the olfactory epithelium. Next, there is a neurologic process; olfactory neurons transduce receptors activation into neuronal electrical signals travelling along the olfactory nerve to olfactory bulb and finally, they are processed by higher cortical areas of the human brain where odour encoding and perception occur. Because of this, olfaction is a complex primal sense highly associated with attraction, mood, detection of danger and odours have the power to evoke distant memories and boost self-confidence. A lot of knowledge on olfaction has to be still get mainly regarding its relationship with other sensory stimuli as audio, visual, taste [1]. Odour recognition memory is slightly influenced by the length of retention intervals. This was observed for short intervals (few minutes) as well as longer retention period (over a year too)[2]. One approach to understanding the olfaction links to other senses is to monitor and analyse human brain activity during odours perception. By measuring event-related potentials (ERPs) by electroencephalography, it’s possible to measure the electrophysiological response of brain to a specific event, ie in this case the presentation of olfactory stimuli [3, 4]. Aim of this study is understanding how the olfactory system, which involves and activates the limbic system, can modulate a perception on emotional face recognition. Through these results we aim to investigate and to implement innovative applications of cognitive neuroscience in order to improve basic …
Publication date: 
1 Jan 2015

Sara Invitto, Simona Capone, Giovanni Montagna, Pietro Aleardo Siciliano

Biblio References: 
Minab-ICT Micro Nano Bio ICT Convergence