Is there a double dissociation between face and object processing?

The double dissociation between prosopagnosia, a face recognition deficit occurring after brain damage, and visual object agnosia, difficulty recognizing other kinds of complex objects, indicates that face and non-face object recognition may be served by partially independent neural mechanisms.

Are faces and objects processed differently?

Face processing is said to be distinct from non-face object processing in that it is more “holistic”; that is, faces are represented as non-decomposed wholes, rather than as a combination of independently-represented component parts (eyes, nose, mouth), and the relations between them (Farah et al 1998).

Can face recognition really be dissociated from object recognition?

In summary; while there have been many reports of dissociations between face and object recognition performance in individuals with DP, no study has yet demonstrated such a dissociation in terms of both accuracy and reaction time while also adopting the stringent criteria for a dissociation advocated by Crawford et al.

What would constitute evidence for a double dissociation between identifying faces and identifying objects?

Together, the patterns of impaired reading with preserved face recognition and impaired face recognition with preserved reading constitute a double dissociation.

Is face recognition different from object recognition?

Moreover, basic-level object recognition seems to involve a parts- based description, whereas face recognition depends upon more holistic processing. This work distinguishes between the visual processes mediating the recognition of objects and faces.

Is facial processing special?

In addition, studies of the nature of shape representation in normal face and object recognition are reviewed. The evidence from brain-damaged and normal subjects suggests that face recognition is, indeed, ‘special,’ and provides some clues to the functional differences between face and object recognition.

Are faces processed by Specialised cognitive mechanisms?

Electrophysiological and functional imaging studies have shown that faces are processed through specialized networks in human and non-human primate’s brain3,4,5,6, meaning that a particular mechanism is involved in face processing.

What is prosopagnosia in psychology?

n. a form of visual agnosia in which the ability to perceive and recognize faces is impaired, whereas the ability to recognize other objects may be relatively unaffected.

In what way is face processing holistic?

Holistic face processing was defined as the alignment effect (i.e., the difference between aligned and misaligned conditions). In the complete version, both the attended and unattended halves were either the same or different, which yielded the “congruency” condition between the critical and irrelevant halves.

What part of the brain is responsible for recognizing objects?

Temporal Lobe. The temporal lobes contain a large number of substructures, whose functions include perception, face recognition, object recognition, memory, language, and emotion.

Why are faces special?

The ability to recognize individual faces is of crucial social importance for humans and evolutionarily necessary for survival. Consequently, faces may be “special” stimuli, for which we have developed unique modular perceptual and recognition processes.

Why is it called the Thatcher effect?

The illusion is what’s known as the Thatcher effect, so called after the former British prime minister whose image was first used for the trick, Margaret Thatcher. The Thatcher effect highlights a flaw in how our brains work — we can’t process an upside-down face.

What does bottom up processing begin with?

Bottom-up processing can be defined as sensory analysis that begins at the entry-level—with what our senses can detect. This form of processing begins with sensory data and goes up to the brain’s integration of this sensory information.