Abstract: A method of processing signals comprising: obtaining an electrical signal from one or more plant specimens; and processing said obtained electrical signal to generate plant data; wherein the plant data is data indicative of a characteristic of said one or more plant specimens, wherein said characteristic comprises at least one of: a measure of the health of said one or more plant specimens, a measure of the vitality of said one or more plant specimens, and a reaction to environmental changes of said one or more plant specimens.

Abstract: There is provided a method of assessing a characteristic of a plant (2), comprising: obtaining a training dataset, wherein the training dataset comprises first data characterising a first electrical signal obtained from a first plant during a first time period when a stressor is present in the first plant or a growth environment of the first plant, second data characterising a second electrical signal obtained from the first plant during a second time period when a stressor is not present in the first plant or the growth environment of the first plant, and third data indicative of a characteristic of the first plant during the first time period and a characteristic of the first plant during the second time period; training a machine learning model based upon the training dataset; obtaining a third electrical signal from a second plant; and assessing, using the trained machine learning model, a characteristic of the second plant based upon the third electrical signal.

Abstract: An apparatus comprising: an electrical signal generation device configured to generate a first electrical signal, the first signal being based upon captured or expected data related to one or more human or animal subjects; and an electrical signal application device configured to apply the first electrical signal in a processed or unprocessed form to a human or animal subject.

Abstract: A method of processing signals comprising: obtaining an electrical signal from one or more plant specimens; and processing said obtained electrical signal to generate plant data; wherein the plant data is data indicative of a characteristic of said one or more plant specimens, wherein said characteristic comprises at least one of: a measure of the health of said one or more plant specimens, a measure of the vitality of said one or more plant specimens, and a reaction to environmental changes of said one or more plant specimens.

Abstract: An apparatus comprising: an electrical signal generation device configured to generate a first electrical signal, the first signal being based upon captured or expected data related to one or more human or animal subjects; and an electrical signal application device configured to apply the first electrical signal in a processed or unprocessed form to a human or animal subject.