5-ps1003 perception

"Define perception and its relationship with reality."

The process the brain interprets sensory data to acquire information about the surrounding environment,

linking subjective experiences to the objective world.

"Explain the physiological basis of perception."

involves the conversion of sensory stimulation into neural impulses by sense organs, which the brain then interprets to create awareness

"Describe the active processes involved in perception."

attending to stimuli,

receiving sensory information,

encoding it into memory, and

behaving in response to the perceived information."

What is sensation

Sensation refers to the physical feeling caused by stimulation of the sense organs,

"Discuss the role of psychophysics in understanding perception."

studies the relationship between the physical features of stimuli and our psychological experiences,

such as how sound intensity relates to perceived loudness."

"How do genetic and experiential factors influence perception?"

genetically determined, while others are shaped through experience as individuals learn and develop."

"What are the three key abilities involved in perception?"

discriminate fine differences,

recognise objects under varying conditions,

behave appropriately based on perceived information.

"Explain the concept of divided attention in perception."

the ability to focus on multiple stimuli or tasks simultaneously,

which can affect the quality of perception and decision-making.

"Describe the interaction between the person and the world in the context of perception."

involves interactions between the individual and their environment, where processes such as attention, memory, and emotions influence how stimuli are perceived."

"What is the purpose of perception?"

transform patterns of energy from external or internal sources into awareness,

enabling effective action in response to the environment.

"Identify the major attentional systems related to perception."

include focused attention, divided attention, and the ability to multitask, all of which influence how we perceive and respond to stimuli."

"Explain the concept of everyday memory in relation to perception."

refers to the way we recall and utilise information from past experiences,

which is closely linked to our perceptual processes and how we interpret current stimuli.

"Discuss the significance of brain areas involved in perception."

responsible for processing sensory information, and their functioning determines how we perceive and interpret the world around us.

"Describe the process of encoding in perception."

involves transforming sensory information into a format that can be stored in memory for later retrieval and use.

"How does perception relate to decision-making and problem-solving?"

provides the necessary information about the environment, which is crucial for making informed decisions and solving problems

"Describe the process of perception."

active process of exploring and making sense of the world,

transforming reality into appearance and structuring the world with attributes of experience.

"Explain the paradox of perception."

it aims to gain information about the world but is not accurate;

it is a subjective recreation of outside events, often involving invention and distortion.

"Define the role of emotions and memory in perception."

influencing how we interpret and experience the world

"How do different perceptual systems interact in the brain?"

processed by separate but interacting systems

and subsystems of the brain, which may be activated simultaneously.

"What is the neurophysiological basis of perception?"

detecting physical stimuli and converting them into signals the brain can understand.”

"Describe the process of reception in perception."

the absorption of energy by nerve cells (receptors)

that are adapted to respond to different kinds of energy.

"Explain how color vision works."

objects absorb certain wavelengths of light and reflect others,

with colors created by our nervous system's

"How does transduction occur in the perceptual process?"

conversion of physical energy into neural activity,

where receptor cells change their level of polarisation after receiving energy

"What is the significance of the 'dress' phenomenon in color perception?"

illustrates that species and individuals can perceive the same object differently, highlighting the subjective nature of color vision."

"Describe the types of energy that different receptors respond to."

visual cells respond to light, auditory cells to sound waves, olfactory epithelium to chemicals, and tactile cells to pressure."

"Describe how sensory experiences are represented in the brain."

"All are represented in the electric potential of single or groups of cells."

"Explain the concept of transduction in sensory processing."

the process by which sensory input is converted into electrical signals in the nervous system.

"How does the brain transform sensory information into conscious perception?"

it retains information and transforms it into conscious perceptual experience through specialised systems within each sensation modality.

"Define the role of nerve cell circuits in sensory experiences."

"Different circuits of nerve cells produce different types of sensory experiences."

"What is the relationship between impulse frequency and sensory experience?"

it relates to the strength or quality of the sensory experience."

"Explain the coding process in the visual system."

Information from cones and rods is transmitted to bipolar cells, then ganglion cells, and finally to the brain through the optic nerve.

"Describe the sensitivity of the visual system to movement and shape."

it is sensitive to movement and the outline of shapes."

"What aspects of vision are cones and rods responsible for?"

"Cones are sensitive to color and detail, while rods are more sensitive to movement and shape."

"How do studies on optic ataxia and visual form agnosia support the model of visual processing?"

the distinct functions of the dorsal and ventral visual systems.

dorsal tells you where things are

ventral tells you what things are

guidng your hands and naming what you see

"Identify the primary function of the occipital lobe."

primarily responsible for vision.

"What is the role of the temporal lobe in sensory processing?"

involved in complex vision, language, and emotion.

"Describe the function of the parietal lobe."

responsible for somatosensation, which includes body and muscle sensation.

"What are the functions of the frontal lobe?"

planning for movement, executive functions, working memory, and emotional regulation.

"Explain the significance of coding in the cerebral cortex."

crucial for processing and interpreting sensory information."

"What are some big questions in cognitive neuroscience regarding perception?"

include the relationship between reality and awareness, what determines our visual perception, and whether perception entails awareness.

"Describe the challenges our visual system faces in a complex environment."

delineate objects, distinguish them from surroundings, and recognize them across different conditions.

"What factors influence perceptual organization?"

influenced by the physical characteristics of the environment, the physiology of our system, and personal experiences.

"Explain the concept of constancy in perception."

ability to perceive objects as stable despite changes in size, brightness, or wavelength of light.

"What is the role of light in visual perception?"

the primary input for the visual system,

but it changes under different environmental conditions.

"How does the visual system maintain object recognition despite changes in light?"

it does not see objects as they actually are; instead, it constructs perception based on various factors."

"Describe the concept of figure-ground differentiation in visual perception."

ability to distinguish an object (figure) from its background (ground).

"What are Gestalt theories in relation to visual perception?"

emphasise that perception is constructed through active processes and transformations, focusing on holistic processing.

"Explain the difference between bottom-up and top-down processes in perception."

processes rely on sensory input to construct perception, while

"Describe the concept of adaptation in perception."

refers to the decrease in response to strong stimuli and an increase in response to weak stimuli.

"Explain the principle of constancy in perception."

minimizes the changes in features of an object under different conditions or perspectives.

"Define shape constancy."

the perception that an object maintains the same shape despite changes in the angle of view.

"How does size constancy work in perception?"

allows us to perceive an object as having a constant size, even when the size of the retinal image changes.

"What is brightness constancy?"

The object maintains a consistent brightness despite changes in lighting conditions

"Explain colour constancy."

the ability to perceive an object as having a consistent colour, even when the wavelengths of light illuminating it change.

"Describe the role of lateral inhibition in visual perception."

a physiological process where neurons influence each other, reducing the activity of neighboring neurons, which enhances contrast at the edges of objects.

"What is chromatic adaptation?"

the process by which our sensitivity to the light source illuminating a surface decreases over time.

"Explain the concept of filling-in in visual perception."

The visual system completes an image that is not fully seen but is perceived as present."

"Describe Gestalt theories of perceptual organization."

suggest that perceptual organization is guided by heuristics that favor the simplest,most likely interpretations,

such as proximity, similarity, closure, good continuation, symmetry, and common fate.

"What is figure-ground differentiation?"

is the brain's process of interpreting visual stimuli,

determining what is the figure and what is the background, often resulting in bi-stable images

"Define affordance in the context of perception."

refers to the potential uses of objects as perceived by an individual.

"Describe the tendency of objects to suggest action possibilities."

term refers to the perceived and actual properties of an object that determine how it can be used, such as a handle "inviting" a pull or a chair "offering" support for sitting.

"Explain how graspable objects can activate motor responses."

activate motor responses for actions unrelated to the object, even when their perception is not fully conscious.

What is top down processes

involve cognitive factors such as expectations and prior knowledge.