I really find some problem facing me in understanding space perception.

first:
I find some debate about the Auditory "Where" stream.
While the spatial information are encoded through the monaural or binaural cues, the primary auditory cortex has a tonotopic representation, so the spatial information-as I see it- will be encoded based essential on the temporal difference of information beyond the primary sensory level.

second:
I read about some researches saying that the auditory spatial information are transformed into retinotopic maps at the posterior parietal cortex before the sensorimotor transformation occurs and he reference frame is an eye-centered one.Also there is a gain modulation by the eye movement.but I do not know if other researches opposed this view specially those are published around 2001-2003.

If the previous two points are right, then there is no need for a detailed "Where" stream from each auditory cortical system, instead the direction of infotmation is detected by the temporal difference and referred to the retinotopic maps.



I am not sure about my understanding correctness as I have no academic study for neuroscience currently, if there is any mistakes do not hesitate in posting the correction.
I need recent date about this issue if you can provide me with it or direct me to some useful sources.
Also, i know little about the details of the hippocampal role in space perception I am asking about some useful sources for this.


thanks in advance..

Wafa