The problem of agreement and the difference of meaning between 'orientation' and 'direction'

the problem of agreement and the difference of meaning between 'orientation' and 'direction'

The passage below is from ‘the Blank Slate’ by Steven Pinker.

http://evolbiol.ru/blankslate/blankslate.htm

In an experimental tour de force, the neuroscientist Mriganka Sur literally rewired the brains of ferrets so that signals from their eyes fed into the primary auditory cortex, the part of the brain that ordinarily receives signals from the ears. When he then probed the auditory cortex with electrodes, he found that it acted in many ways like the visual cortex. Locations in the visual field were laid out like a map, and individual neurons responded to lines and stripes at a particular orientation and direction of movement, similar to the neurons in an ordinary visual cortex. The ferrets could even use their rewired brains to move toward objects that were detectable by sight alone.

In this passage I have two questions in the underlined part.

First, the difference of meaning between 'orientation' and 'direction'.
Since 'orientation' can have the meaning 'direction' and 'direction' seems to be the meaning of 'orientation' in this context, I can not figure out what is the author's intention of using these seem-to-be-the-same words together.

Last it's hard for me to work out the agreement with 'and' in the underlined phrase.
There's three possibility :
1. at (a particular orientation) and (direction of movement)
2. at a particular orientation and (a particular) direction of movement
3. at a particular orientation (of movement) and (a particular) direction of movement

But I'm not sure, of these three, which one is what the author supposed to mean.

Regards.