This is the basic difference between sensation and perception; the two constructs . He also theorized the relationship between original intensity and perceived. Example, I see a bright light flash in front of my eyes (sensation), I perceive it as is the relationship and the differences between sensation and perception?. Sensation & Perception. Chapter 6 Our sensory and perceptual processes work together to help us sort out A study of the relationship between physical.
This debate misses the point that the nervous system has innate potentials that require environmental input to develop. Context plays a big role in perceptual interpretation by stating how readily one understands the meaning of what is perceived depends on his or her experience with and understanding of it. Perception and memory produce thought that forms a mental representation and when one remembers, he or she tries to bring that representation to mind.
The Mind's Secret Reality
When students sit down to study, it is best to keep background noise to a minimum. Arranging for a quiet and uninterrupted place to study will provide the best environment for clear thinking and attention. Conclusion Because of the individual differences of students in learning teams, knowing, and understanding others environments and backgrounds helps students work together more effectively. The differences in sensations and perceptions affect how each team member learns, behaves and works.
Knowing the mental struggles of one of our team members enabled us to understand when he chose to leave the class. Understanding the behavior of individuals comes from knowledge and appreciation of the particular sensory and perceptual experiences of others.
To understand psychological disturbances it is helpful for to understand the limitations and complexities of the sensory systems and the role perception plays in either distorting or correcting those systems. As teams continue to work together, understanding the stimulus thresholds of each member as well as how dividing attention facilitates or impedes the learning process will guide members to know how best to divide responsibilities to achieve maximum results.
When noise and distractions are kept below individual threshold levels, the environment becomes conducive to learning and completing assignments. Previous knowledge would not influence it in any way. It would be a deterministic system where adaptation to new circumstances would be impossible.
Imagine that everyone believed that rustling leaves can only be caused by the wind and it would never signal danger.
The first predator that would attack from the bushes would be able to wipe out humanity. Or imagine the other opposite.
Sensation and Perception
If rustling of the leaves would always signal danger to everyone, travelling through a forest would be nearly impossible because it would be exhausting to be always on alert and taking detours, strangling the reach of early human communities denying them the resources of the forest.
The senses The first step in information processing is receiving the information. Since our brains communication is based on electric impulses, the first step is to transform the signal of the outside world into the code of the brain. For each modality, we have a number of receptor cells with different sensitivities. The transduction of data transforming physical, chemical and electromagnetic stimuli into action potentials occurs at these receptors.
These action potentials that can be thought of as travelling waves of electricity can now start their journey to the cortex of the brain, where dedicated areas for each modality are ready to process the incoming information see Figure 1. As the confines of this chapter do not allow for much more, I will briefly present each sense highlighting its fundamental properties and possible interesting, but less known facts. Those who are interested in knowing more about human sensation can read further information in: The receptors are located at the back of our eyes, on the retina.
There are two distinct kinds of receptor cells: Cones are responsible for experiencing colour and need more light to become active than rods. They are concentrated in the fovea, the spot on the retina responsible for sharp central vision. Rods on the other hand are more scattered and mostly located on the peripheral areas of the retina. They need less light to operate but do not process colour.
Most people have 3 different kinds of cones, sensitive to 3 different wavelengths of light and this is called trichromacy. The three different cones are most sensitive selectively to the following colour: This is why colour is defined on the so-called RGB scale. However, there are certain people, who have a fourth type of cone called tetrachromats.
Sensation, Perception, and Attention | The Mind's Secret Reality
The sensitivity of this fourth cone is somewhere between green and red. People with tetrachromacy describe two kinds of green like colour, one is the natural green of plants and the other is a more artificial green of most human made objects Jameson et al. Of course most of the time, the medium is air and the sounds we hear are the products of changes in air pressure. However we can also hear sounds underwater in which case water is the medium and the sound is the product of changes in water pressure.
The receptors by which we are capable of identifying these changes are much more hidden than in the case of vision. The sound wave first has to enter the auditory canal. Here the impulses transfer the vibration to a membrane called the eardrum. The small bones transfer this vibration towards the inner ear, where the actual receptor cells are. The cochlea, a fluid filled cavernous organ, is where the actual transduction of the stimulus happens by the hair cells.
Humans are sensitive to sound frequencies between 20 Hz and Hz; however the upper threshold lowers with age. Auditory hallucinations hearing sounds without an actual sound source are often thought of as signs of some kind of a psychotic disorder. However this is not always the case. Even complex hallucinations like hearing music or voices can manifest without any other mental problems. These symptoms are often caused by organic problems, like tumour or stroke.AP Psychology - Sensation & Perception - Part 1 - The Basics
It is followed by anxiety and heightened hearth rate. This is easily proven when one eats food with a bad case of cold.
Much of the taste associated will be gone; only a basic sensation of flavour will remain. The olfactory receptors are located in the nasal cavity and are activated by certain molecules. The signal then travels to the olfactory bulb from where it projects to the olfactory cortex.
The phenomenon of certain smells bringing back very vivid memories is explained by the connectivity of the olfactory bulb. It is part of the limbic system that mainly processes emotion and memories. This gives olfaction a very strong associative net and enables certain smells to trigger emotions and memories. There is an ongoing debate over human sensitivity to pheromones chemicals that alter the behaviour of others in the same species.
However, it is debatable whether it has any function at all.