The phrase "are perceivable" is correct and usable in written English.
It can be used when discussing things that can be seen, heard, or otherwise detected by the senses.
Example: "The subtle changes in the painting are perceivable only to those with a trained eye."
Alternatives: "can be seen" or "are detectable".
Or at least ones that are perceivable to me".
In particular, we argue that variation in sensory systems, such as retinal specializations and the position of the eyes, will determine whether gaze cues (e.g. head movement) are perceivable during visual fixation.
For humans, the Good comes to pass, as if trivially, in that responsibility and generosity are perceivable in human affairs.
Potential implications of changes in biomechanical properties (e.g., hardness and elasticity), adhesiveness, and surface electrical properties of cells are perceivable.
This also implies that contents are perceivable by all participants, irrespective of their technical setups like browser version, browser plugins or physical disadvantages like poor eyesight or hearing.
Moreover, as very different methods to quantify colour variation have been used it is not possible to compare the magnitude of change among different species or colour types or, more importantly, to determine whether seasonal colour differences are perceivable by the birds.
But we don't want to say that whenever x is perceivable, it is perceived etc.
In principle, everything that exists is perceivable.
Often, it is this depth of flavour that is perceivable in the final dish rather than an actual beer taste.
The Prabhakaras admitted only such universals as inhere in perceptible instances and insisted that true universals themselves must be perceivable.
An abrupt increase of porosity of the samples was perceivable with increasing α angles (particularly from 40° to 80°).
