Temporal lobe○Damage to this area causes prosopagnosia (inability to recognize faces)●Parahippocampal place area (PPA) ○Temporal lobe○Responds specifically to places (indoor/outdoor scenes) ●Extrastriate body area (EBA): ○Responds to specifically to pictures of bodies and parts of the bodies.Distributed Representation in the Brain ●In addition to localization of function, specific functions are processed by many different areas of the brain ●Many different areas may contribute to a function ●May appear to contradict the notion of localization of function, but the two concepts are actually complementaryNeural Networks ●Groups of neurons or structures that are connected together ●Can be examined using diffusion tensor imaging (DTI)Key Terms:●Action potential: ○Propagated electrical potential responsible for transmitting neural information and for communication between neurons. Action potentials typically travel down a neuron’s axon.●Axon: ○Part of the neuron that transmits signals from the cell body to the synapse at the end of the axon●Brain Imaging: ○Technique such as functional magnetic resonance imaging (fMRI) that results in images of the brain that represent brain activity. In cognitive psychology, activity is measured in response to specific cognitive task. ●Broca’s area: ○An area in the frontal lobe associated with the production of language. Damage to this area causes Broca’s aphasia. ●Cell body: ○Part of a cell that contains mechanisms that keep the cell alive. In some neurons, the cell body and the dendrites associated with it receive information from other neurons. ●Cerebral Cortex: ○The 3-mm thick outer layer of the brain that contains the mechanisms responsible for higher mental functions such as perception, language, thinking and problem solving.
●Cognitive Neuroscience: ○Field concerned with studying the neural basis of cognition. ●Dendrites: ○Structures that branch out from the cell body to receive electrical signals from other neurons. ●Diffusion tensor imaging (DTI): ○A technique, based on detection of how water diffuses along the length of the nerve fibres, for tracing nerve pathways and determining connections.●Distributed representation: ○Occurs when a specific cognition activates many areas of the brain ●Double dissociation: ○A situation in which a single dissociation can be demonstrated in one person and the opposite type of single dissociation can be demonstrated in another person (ie., Person 1: function A is present, function B is damaged; Person 2: function A is damaged, function B is present). ●Extrastriate body area (EBA): ○An area in the temporal cortex that is activated by pictures of bodies and parts of bodies, but not by faces or other objects. ●Feature detectors: ○Neurons that respond to specific visual features, such as orientation, size, or the more complex features that make up environmental stimuli.
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- Fall '11
- temporal lobe