it
cannot explain how we perceive an object from different viewpoints
. You have no difficulty distinguishing between the letters O and W, but it takes longer to distinguish between the letters O and Q. Which theory of object recognition does this support? Feature-analysis theory.
What are the shortcomings of the template matching theory?
The difficulty with template matching as a model for perception is
that contexts are rarely constrained
. – They are not inherently view invariant. For every different possible view, there would have to be a different template (replication). As such, template representations are uneconomical.
What is viewer-centered?
The so-called viewer-centered theory suggests that this is
done based on matching specific views to a set of templates
, which requires explicit viewer-specific object representations (Edelman and Bulthoff, 1992, Poggio and Edelman, 1990, Ullman, 1989).
What can we conclude about two major explanations for speech perception?
Speech perception operates in the same way as visual perception. What an we conclude about the two major explanations for speech perception? … Samaria: “
In general, most theorists believe that the human nervous system processes speech sounds in the same way it processes nonspeech sounds.”
What is object-centered representation?
In an object-centered representation,
the position of the subparts of an object are encoded with respect to a set of axes and an origin centered on the object
. Several physiological and neuropsychological results support the existence of such representations in humans and monkeys.
What is the difference between viewer-centered and object centered perception?
The perception of forms can be considered from two fundamental perspectives:
viewer-centered representation considers the appearance of an object relative to the viewer
, and object-centered representation considers the appearance of the object itself, regardless of the distance and angle from which it is viewed.
What is distal and proximal stimulus in psychology?
The
distal stimulus
corresponds to what is generally considered the “actual” object in the environment. The proximal stimulus is generally defined as the pattern of energy impinging on the observer’s sensory receptors. This energy is associated with a distal stimulus.
What is an example of template matching?
For example, if the user was looking for a face, the
eigenspaces
may consist of images (templates) of faces in different positions to the camera, in different lighting conditions, or with different expressions.
What is a problem with the template theory?
This theory is largely considered too simplistic, because the same stimulus can be viewed from multiple perspectives, thereby altering the input pattern, and because a particular stimulus can have many different variations (e.g., a letter of the alphabet can be printed in numerous styles, sizes, orientations); it is …
What is top-down theory?
Take-home Messages. Top-down processing is perceiving the world around us by drawing from what we already know in order to interpret new information (Gregory, 1970). Top-down theories are
hypotheses-driven, and stress the importance of higher mental processes such as expectations, beliefs, values and social influences
.
What is the main point behind the motor theory of speech perception?
The motor theory of speech perception is the hypothesis that people
perceive spoken words by identifying the vocal tract gestures with
which they are pronounced rather than by identifying the sound patterns that speech generates.
Which part of the brain is important for speech perception?
Wernicke’s area
is mainly involved in the understanding and processing speech and written language. Wernicke’s area was first discovered by Karl Wernicke in 1876. It’s located in the temporal lobe, just behind your ears. The temporal lobe is also the region where sound is processed.
Why is speech perception difficult?
One of the major difficulties encountered in speech perception is that
each utterance of a language can be realized phonetically in many different ways
. … Rules such as these must also be assumed to be part of the perceptual strategies used by human listeners in understanding spoken language.
What does an object Centred approach focus on?
An object-centered approach, following art historian Bernard Herman is one in which the focus of study is
on the object itself, specifically its physical attributes and its provenance
; this is the kind of descriptive, check-list approach that forms most museums catalogues of their collections.
What is a distal object?
distal stimuli are
objects and events out in the world about you
. proximal stimuli are the patterns of stimuli from these objects and events that actually reach your senses (eyes, ears, etc.)
What is the difference between distal and perceptual object?
This may allow the user to infer that a distal object is present, without experiencing it as such. In a perceptual strategy, on the other hand, one is
aware
of the distal object itself, without explicitly attending to the proximal stimulation.
