Term
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Definition
| Abnormal brain activity is restricted to an epileptic "focus" |
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Term
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Definition
| Primarily sensory or motor |
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Term
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Definition
| restricted to temporal lobes often resulting in automatisms and alterations in consciousness |
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Term
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Definition
| abnormal brain activity is brain-wide and has no originating focal point |
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Term
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Definition
| results in violent convulsions beginning with a tonic phase(loss of breathing and intense muscle contraction) followed by a clonic phase (violent, rhythmic contractions) and then coma (lasting 5 minutes) |
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Term
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Definition
| loss of breathing and intense muscle contraction |
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Term
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Definition
| violent, rhythmic contractions |
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Term
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Definition
| Activity spreads as abnormal electrical activity affects other regions of the brain |
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Term
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Definition
| Rigidity, resting tremor, bradykinesia,postural instability |
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Term
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Definition
| -Inherited -Symptoms don't develop until a person has reached 35 -Characterized by involuntary movements and rigidity -Progressive dementia, irritability, moodiness -Death 15-20 years after onset -Profound progressive destruction of GABA and Acetylcholine neurons in the basal ganglia |
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Term
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Definition
| ~1% of population develops in a lifetime. 2 million Americans each given year |
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Term
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Definition
| -Observed in all races and cultures. -Onset sudden and intense. Begins with acute psychotic phase. -Brought on by drug use or stressors -Can be successfully treated with drugs, but long-term prognosis is poor |
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Term
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Definition
-Disorders of thought
-Hallucinations
-Delusions
-Flattened emotional response
-Poverty of speech
-Lack of initiative and persistence
-Anhedonia
-Social withdrawal
-Reduction in psychomotor speed
-Problems with learning and memory
-Problems with abstract thinking
-Reduction in problem solving abilities |
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Term
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Definition
| Process of detecting and encoding environmental energy |
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Term
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Definition
| The result of the organization and integration of sensations into an awareness of objects and environmental events |
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Term
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Definition
| Specialized neurons that change energy into neural signals |
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Term
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Definition
| Local depolarization or hyperpolarization of the receptor membrane |
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Term
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Definition
| The process by which energy is transferred into neural signals |
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Term
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Definition
| Receive information from photoreceptors and send it to the ganglion cells |
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Term
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Definition
| Receive information from bipolar cells. Axons make up the optic nerve |
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Term
| Amacrine and Horizontal Cells |
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Definition
| Diverse, about 50 kinds, control the ability of ganglion cells to respond to specific aspects of the visual stimuli |
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Term
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Definition
| A tiny area specialized for acute, detailed vision. In this area, there are no blood vessels and ganglion cell axons. Moreover, each receptor connects to a single bipolar cell, which in turn connects to a single ganglion cell for better acuity |
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Term
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Definition
| Reception of signals that provide information about tissue damage |
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Term
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Definition
| perception of an aversive or unpleasant sensation that originates from specific region of the body |
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Term
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Definition
| Increase in pain tolerance |
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Term
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Definition
| Decrease in pain threshold |
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Term
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Definition
| When non-painful stimuli become painful |
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