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A new paper led by a Concordia researcher examines how social isolation, loneliness and frailty affect one another and the bidirectional relationship they exert as an individual gets older.

“We have a bidirectional relationship between financial stress and mental health,” Abramson said.

"We think that myelin plasticity is bidirectional -- you can both increase myelination of a circuit and decrease myelination of a circuit."

Therefore, a new optical device capable of bidirectional and omnidirectional wavelength adjustment is needed to maximize the utilization of wavelength control technology.

This also needs to be done bidirectionally, since batteries are used both as energy sources and sinks.