L23M9 - Lecture 23 (09/03/11) Perception - Schemas and...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 23 (09/03/11) Perception - Schemas and models are how we put bits of information together - Perception – how we perceive the world around us - In order to understand this it’s important to have an understanding about het precise oppositions we have about perception - Notion of sensation does not describe any experience that we have – this notion gets in the way of understanding what perception is - First thing about perception is that we can never see one thing – when we are seeing, we are seeing b/c of a contrast - We have seen something its b/c something is in a field (everything else which is around what we’re interested in) - If there is no contrasts we won’t see anything – this is true in a number of ways o Ex. Say you would be able to focus on a particular point without moving your eyes at all – if you can control your eyes for long enough you stop seeing o This is b/c you are in a situation where nothing changes - There are many animals which use this in a big way – an owl hunting moves its head side to side continuously b/c its changing what’s in fron to f the eyes by moving them s it becomes clear - There are no pure sensations, things that are there which we see automatically is related to the fact that we need to be given a quantity to see o Ex. Red patch on a carpet – it has to be big enough so you can see it o Other cases you need to look at something long enough you see it - Another issue is our field of vision changes constantly – it’s not the optic characteristics of our eyes which determine what we’re seeing, but what attention we’re giving to what’s in front of us o Auditory example – talking to your friend in a crowded bar, you can hear lots of other noise and concentration just as well, but you’re focussing on your friend’s voice which becomes louder over the rest - Optical illusions (what are on the slide) o Best way to deal with these things is to say something paradoxical – there is no illusion – what we’re seeing is not just the horizontal lines but figures, and our ability to put together elements is that we see it as a whole unit o We don’t focus on little parts, we see it as a whole – why we thing the top one is larger b/c it is longer, but the lines are the same length - Measure the lines – you do a logical check, you use your vision but the purpose of looking is to translate elements of an image into a figure. Masure the other line and way oh these are the same length – this is objective. -
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 04/13/2011.

Page1 / 4

L23M9 - Lecture 23 (09/03/11) Perception - Schemas and...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online