- Substantial reduction of noradrenaline in kitten visual cortex by intraventricular injections of 6-hydroxydopamine does not always prevent ocular dominance shifts after monocular deprivation. Daw, N.W., Videen, T.O., Rader, R.K., Robertson, T.W., Coscia, C.J. Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale. (1985)