Covert contrast and covert errors in persistent velar fronting

Contrast and Post-Velar Fronting in Russian

There is a well-known rule of Russian whereby /i/ is said to be realized as [Y] after non-palatalized consonants. Somewhat less well-known is another allophonic rule of Russian whereby only [i], and not [Y], can follow velars within a morphological word. This latter rule came about due to a sound change in East Slavic called postvelar fronting here: kY > ki (and similarly for the other velars)....

Velar Fronting Revisited

Covert cognition in the persistent vegetative state.

Brain damage can sometimes render a patient persistently unresponsive and yet apparently awake, admitting the possibility that the absence of overt voluntary behaviour might conceal a retained capacity for covert cognition. When given instructions to perform a cognitive task, a minority of patients in such a so-called persistent vegetative state (PVS) has recently been found to exhibit patterns...

Contrast and covert contrast in the speech production of children.

BACKGROUND Speech acoustics. AIM To acoustically analyze the substitution between /t/ and /k/ in the speech production of children with typical and deviant acquisition process in order to identify and quantify the presence of covert contrast. METHOD The experiment involved the repetition of words that combined /t/ and /k/ with /a/ and /u/ in stressed position. Participants were 9 children d...

Covert Robotics: Covert Path Planning

T s s a target itself. Another example is to guard a secured environment, where it is important to be covert as well as overt at the same time, in this way the chances are higher for the robot to see an intruder before the opposite happens. A covert robot may be used as well for hostage rescue, for example by sending an insect size covert robot with a camera to the hostage area to send images t...