The subjects of one particular study , rhesus monkeys , were deprived of sleep in durations of 30 to 36 hours .
The subjects of one particular study , rhesus monkeys , were were immediately assessed in short term memory tasks .
The subjects of one particular study , rhesus monkeys , were deprived of sleep in durations of 30 to 36 hours , and were immediately assessed in short term memory tasks .