Fabrics, articles of apparel, and / or garment structures include infrastructure for transmitting information, such as signals produced by a wearer or from another source. Such fabrics may include: a textile formed through a knitting or weaving process, wherein at least one yarn used in the knitting or weaving process is electrically conductive to form sensor regions and / or other integrated electrically conductive infrastructure for transmitting electrical signals. Additional information is provided relating to methods for forming fabrics, articles of apparel, and / or garment structures of the types described above, as well as methods of using such products, e.g., for monitoring and / or displaying information regarding one or more physical and / or physiological parameters.