Summary
Summary SLK120 Chapter 4 Notes
- Course
- SLK120 (SLK120)
- Institution
- University Of Pretoria (UP)
SLK120 Chapter 4 Notes
[Show more]
Content preview
SLK120 CHAPTER 4NOTES
Taneil Thompson
UNIVERSITY OF PRETORIA, 2020
, DISCLAIMER:
PLEASE NOT THAT THIS INFORMATION IS NOT MY OWN. IT HAS
BEEN SOURCED FROM THE TEXTBOOK TITLED ‘PSYCHOLOGY
THEMES AND VARIATIONS’. THIS DOCUMENT SHOULD BE USED
IN ADDITION TO THE TEXTBOOK, LECTURES, LECTURE NOTES
AND TUTORIAL WORKSHEETS.
, SLK120 Notes
Chapter 4- Sensory Systems and Perception
PART 1 (for Semester Test 1):
1. Explain how stimulus intensity is related to absolute thresholds
and Just Noticeable Differences (JNDs). (155-157)
- Psychophysics: study of how a physical stimulus within the environment
is converted into perceptions and psychological experiences.
- A sensory input (stimulus) gives off energy which is absorbed by our
sensory organs (mouth, ears, eyes, skin, nose). The sensory receptors
detect this energy (this is sensation: the physiological process of taking
in raw physical energy from stimuli via the sensory receptors of our
different sensory organs) and convert it to neural impulses which are
sent to the brain (this is transduction: a sub-process that occurs during
sensation and is defined as the conversion of the raw physical energy
into sensory neurological signals). The brain then organises the sensory
input and translates it into something meaningful (this is perception: a
psychological process whereby sensory neurological signals that reach
the brain are selected, organised and interpreted, so that we can make
sense of and attach meaning to sensations)
- The point at which the physical energy is converted into a neural impulse
is the point at which the two processes (sensation and perception)
merge.
- Agnosia: disorder that results in the breakdown between sensation and
perception and is characterised by a person’s inability to identify the form
and/or function of people or objects using certain senses.
a.) Auditory agnosia: Inability to recognise an object by just listening
b.) Tactile agnosia: Inability to recognise an object by just touching
c.) Olfactory agnosia: Inability to recognise various odours
d.) Visual agnosia: Inability to recognise an object by just seeing
(disorder of what pathway- see point 11)
o Apperceptive Visual Agnosia: inability to put information together
to create meaningful whole
o Associative Visual Agnosia: inability to give meaning to perception
o Prosopagnosia: inability to recognise familiar faces
e.) Form agnosia: Inability to perceive forms as a whole picture
- Threshold: point at which a stimulus triggers a response.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TaneilThompson. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R50,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
51036 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 15 years now